(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.

  • Viewed
    Products
    Sản phẩm
    đã xem
    최근 본
    상품
    查看产品 查看產品
  • My
    Components
    Linh kiện
    của tôi
    나의 부품 我的部件 我的部件
  • Cart
Recently Viewed Products
X
My Components
X
Cart item(s)
X
Loading...
  • [Thông báo] Sử Dụng Địa Chỉ Hành Chính Mới Cho Giao/Nhận Hàng Hóa Từ 1/10/2025. Xem chi tiết.
    [Notice] Update of Official Address for Delivery and Receipt of Goods from October 1, 2025. See more.
  • [Cảnh Báo] Thủ Đoạn Lừa Đảo Từ Nhân Viên Giao Hàng - Yêu Cầu Trả Phí Ship. Xem chi tiết
    [Warning] Fraud Calling from Shipper - Asking to Pay Shipping Fee. See more

TRUSCO NAKAYAMA Screw-Hole-Related Tools(work material:Low-Carbon Steel (carbon alloy less than 0.25%))

TRUSCO NAKAYAMA offers products Screw-Hole-Related Tools specified by work material Low-Carbon Steel (carbon alloy less than 0.25%) from Cutting Tools product category. There are a total of 16 items. A tool for drilling and cutting workpieces that can be used with a wide range of materials. TRUSCO NAKAYAMA products are available to order through MISUMI online 24/7. Free shipping, no minimum order.

Search by specifying the lower class categoryTìm kiếm bằng cách chỉ định danh mục lớp thấp hơn

Filter By
CAD
Days to Ship
  • All
  • Same day
  • 4 Day(s) or Less
  • 5 Day(s) or Less
  • 6 Day(s) or Less
  • 7 Day(s) or Less
  • Others

16 itemsMặt hàng

Sort By
30
45
60
  1. 1
  • You can add up to 6 items per a category to the compare list.

    Spiral Tap (for Metal Screws)

    Spiral Tap (for Metal Screws)

    TRUSCO NAKAYAMA

    [Features]· A spiral tap for general steel.[Applications]· For blind hole machining.· Work materials: General steel, low/medium carbon steel, alloy steel.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M3 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.5 ~ 2 Vanadium High-Speed Steel Spiral Tap For blind hole 2.5P - - 46 ~ 95
    From: 260,850 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hand Tap (for Metric Screws/SKS)

    Hand Tap (for Metric Screws/SKS)

    TRUSCO NAKAYAMA

    [Features]· Use when manufacturing or cleaning out screw holes.· For coarse screw thread ridge repair and manufacture.[Applications]· Work materials: Iron, light metal.· Creation and correction of coarse screw threads.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M2 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.4 ~ 2 Alloy HSS Hand Tap - 1.5P ~ 9P Non-Coated NA 40 ~ 95
    From: 88,000 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hand Tap (for Metric Screws/HSS-E)

    Hand Tap (for Metric Screws/HSS-E)

    TRUSCO NAKAYAMA

    [Features]· Can be used for both through holes and blind holes.[Applications]· Work materials: General steel, low/medium carbon steel, alloy steel.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M3 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.5 ~ 2 Vanadium High-Speed Steel Hand Tap For through hole / For blind hole 1.5P ~ 9P Non-Coated NA 46 ~ 95
    From: 158,000 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Round Die For Metric Screw

    Round Die For Metric Screw

    TRUSCO NAKAYAMA

    [Features]· Dimensional adjustments can be made with the adjustment screw provided. · Can also be used to modify screw threads. · For round dies. [Applications]· Work materials: iron, light metals. · For male threading. · Correction of coarse screw threads.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M2 ~ M30 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.4 ~ 2 Alloy HSS Die - - - - -
    From: 546,683 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Sale
    Hand Tap Set (for Metric Screws/HSS-E)
    • On Sale Till 04/12/2025
    Hand Tap Set (for Metric Screws/HSS-E)
    Hand Tap Set (for Metric Screws/HSS-E)
    Sale

    Hand Tap Set (for Metric Screws/HSS-E)

    TRUSCO NAKAYAMA

    [Features]· Can be used for both through holes and blind holes.· It is a high-speed steel (HSS-E) tap set.[Applications]· Work materials: General steel, low/medium carbon steel, alloy steel.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M3 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.5 ~ 2 High-speed steel Hand Tap For through hole / For blind hole - Non-Coated NA 46 ~ 95
    From: 591,988 VND
    Special Price
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hand Tap Set (for Metric Screws/SKS)

    Hand Tap Set (for Metric Screws/SKS)

    TRUSCO NAKAYAMA

    [Features]· Use when manufacturing or cleaning out screw holes.· For coarse screw thread ridge repair and manufacture.· A tungsten hand tap set.[Applications]· Work materials: Iron, light metal.· Creation and correction of coarse screw threads.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M2 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.4 ~ 2 Alloy HSS Hand Tap - - Non-Coated NA 40 ~ 95
    From: 257,309 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Point Tap (for Metric Screws)

    Point Tap (for Metric Screws)

    TRUSCO NAKAYAMA

    [Features]· High-speed tapping is possible.· Oxidization treated.[Applications]· For through hole finish work.· Work materials: General steel, low-medium carbon steel, alloy steel.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    M3 ~ M16 Meter Low-Carbon Steel (carbon alloy less than 0.25%)[○] 0.5 ~ 2 Vanadium High-Speed Steel Point tap For through hole 5P - - 46 ~ 95
    From: 251,488 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-Threading Die (PF Screw)

    Hexagonal Re-Threading Die (PF Screw)

    TRUSCO NAKAYAMA

    Used when cleaning out bolts/screws. Work can be done using a monkey wrench. This product can be used in place of a round die when modifying the screw thread ridges. For fixing PF (straight) threads.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    G1 ~ G7/8 - Low-Carbon Steel (carbon alloy less than 0.25%)[○] 11 ~ 28 Alloy HSS Modification/removal Tool - - - - -
    From: 685,764 VND
    Days to Ship: Số ngày giao hàng: 9 Day(s)
    day to ship 9 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-threading Die (Whitworth Screw)

    Hexagonal Re-threading Die (Whitworth Screw)

    TRUSCO NAKAYAMA

    [Features]· Used when cleaning out bolts/screws.· To be used when modifying screw threads.· Work can be done using a monkey wrench.· This product can be used in place of a round die when modifying the screw thread ridges.[Applications]· For fixing BSW (Whitworth) Thread.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    W1 ~ W9/16 Whitworth Low-Carbon Steel (carbon alloy less than 0.25%)[○] 8 ~ 40 Alloy HSS Die - - - - -
    From: 529,798 VND
    Days to Ship: Số ngày giao hàng: 9 Day(s)
    day to ship 9 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-threading Die For Gas Pipe (PT Screw)

    Hexagonal Re-threading Die For Gas Pipe (PT Screw)

    TRUSCO NAKAYAMA

    [Features]· Used when cleaning out bolts/screws.· To be used when modifying screw threads.· Work can be done using a monkey wrench.· This product can be used in place of a round die when modifying the screw thread ridges.[Applications]· For fixing PT (tapered) thread.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    R1 ~ R7/8 - Low-Carbon Steel (carbon alloy less than 0.25%)[○] 11 ~ 28 Alloy HSS Die - - - - -
    From: 745,018 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-threading Die For Gas Pipe (PS Screw)

    Hexagonal Re-threading Die For Gas Pipe (PS Screw)

    TRUSCO NAKAYAMA

    [Features]· Used when cleaning out bolts/screws.· To be used when modifying screw threads.· Work can be done using a monkey wrench.· This product can be used in place of a round die when modifying the screw thread ridges.[Applications]· For fixing PS (straight) threads.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    R1 ~ R7/8 - Low-Carbon Steel (carbon alloy less than 0.25%)[○] 11 ~ 28 Alloy HSS Die - - - - -
    From: 616,715 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Hand Tap (for Whitworth Screw Thread / SKS)

    Hand Tap (for Whitworth Screw Thread / SKS)

    TRUSCO NAKAYAMA

    · For creating and refining (making clean) screw holes. · For creating and modifying screw threads. · Iron and light metal.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    W1 ~ W7/8 Whitworth Low-Carbon Steel (carbon alloy less than 0.25%)[○] - Alloy HSS / SKS Hand Tap - - - NA 46 ~ 125
    From: 146,000 VND
    Days to Ship: Số ngày giao hàng: 9 Day(s)
    day to ship 9 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Round Die For Whitworth Screws

    Round Die For Whitworth Screws

    TRUSCO NAKAYAMA

    Dimensional adjustments can be made with the adjustment screw provided. · Can also be used to modify screw threads. · Iron and light metal. · For male threading.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    W1 ~ W7/8 Whitworth Low-Carbon Steel (carbon alloy less than 0.25%)[○] 12 ~ 40 Alloy HSS Die - - - - -
    From: 546,683 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-Threading Die (Unify Coarse Screw)

    Hexagonal Re-Threading Die (Unify Coarse Screw)

    TRUSCO NAKAYAMA

    Used when cleaning out bolts/screws. Work can be done using a monkey wrench. This product can be used in place of a round die when modifying the screw thread ridges. For fixing UNC (Unified Coarse) thread.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    1UN ~ 9/16UN - Low-Carbon Steel (carbon alloy less than 0.25%)[○] 8 ~ 20 Alloy HSS Die / Modification/removal Tool - - - - -
    From: 604,771 VND
    Days to Ship: Số ngày giao hàng: 9 Day(s)
    day to ship 9 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Hexagonal Re-Threading Die (Unify Fine Screw)

    Hexagonal Re-Threading Die (Unify Fine Screw)

    TRUSCO NAKAYAMA

    Used when cleaning out bolts/screws. Work can be done using a monkey wrench. This product can be used in place of a round die when modifying the screw thread ridges. For fixing UNF (Unified Fine) thread.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    1UN ~ 9/16UN - Low-Carbon Steel (carbon alloy less than 0.25%)[○] 14 ~ 28 Alloy HSS Die / Modification/removal Tool - - - - -
    From: 582,486 VND
    Days to Ship: Số ngày giao hàng: 9 Day(s)
    day to ship 9 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Adjustable Round Die For Tapered Pipe Thread (PT Screw)

    Adjustable Round Die For Tapered Pipe Thread (PT Screw)

    TRUSCO NAKAYAMA

    [Features]· Dimensional adjustments can be made with the adjustment screw provided. · Can also be used to modify screw threads. [Applications]· Work materials: low carbon steel. · For male threading.

    Screw size (Nominal) Screw Types work material Pitch (P), Number of Threading(mm) Tool Material Type Tap Type Hole type Chamfer threads (Lcf) Coating Type Coating Y/N Overall Length (L)(mm)
    1 ~ 3/8 Taper for Pipe Low-Carbon Steel (carbon alloy less than 0.25%)[○] - Alloy HSS Die - - - - -
    From: 1,404,738 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
BrandNhãn hiệu
Product SeriesDòng sản phẩm
From
Days to ShipSố ngày giao hàng
Screw size (Nominal)
Screw Types
work material
Pitch (P), Number of Threading(mm)
Tool Material Type
Tap Type
Hole type
Chamfer threads (Lcf)
Coating Type
Coating Y/N
Overall Length (L)(mm)

    You can add up to 6 items per a category to the compare list.

    Spiral Tap (for Metal Screws)

        You can add up to 6 items per a category to the compare list.

        Hand Tap (for Metric Screws/SKS)

            You can add up to 6 items per a category to the compare list.

            Hand Tap (for Metric Screws/HSS-E)

                You can add up to 6 items per a category to the compare list.

                Round Die For Metric Screw

                    You can add up to 6 items per a category to the compare list.

                    Sale
                    Hand Tap Set (for Metric Screws/HSS-E)
                    • On Sale Till 04/12/2025
                    Hand Tap Set (for Metric Screws/HSS-E)
                    Hand Tap Set (for Metric Screws/HSS-E)

                      You can add up to 6 items per a category to the compare list.

                      Hand Tap Set (for Metric Screws/SKS)

                          You can add up to 6 items per a category to the compare list.

                          Point Tap (for Metric Screws)

                              You can add up to 6 items per a category to the compare list.

                              Hexagonal Re-Threading Die (PF Screw)

                                  You can add up to 6 items per a category to the compare list.

                                  Hexagonal Re-threading Die (Whitworth Screw)

                                      You can add up to 6 items per a category to the compare list.

                                      Hexagonal Re-threading Die For Gas Pipe (PT Screw)

                                          You can add up to 6 items per a category to the compare list.

                                          Hexagonal Re-threading Die For Gas Pipe (PS Screw)

                                              You can add up to 6 items per a category to the compare list.

                                              Hand Tap (for Whitworth Screw Thread / SKS)

                                                  You can add up to 6 items per a category to the compare list.

                                                  Round Die For Whitworth Screws

                                                      You can add up to 6 items per a category to the compare list.

                                                      Hexagonal Re-Threading Die (Unify Coarse Screw)

                                                          You can add up to 6 items per a category to the compare list.

                                                          Hexagonal Re-Threading Die (Unify Fine Screw)

                                                              You can add up to 6 items per a category to the compare list.

                                                              Adjustable Round Die For Tapered Pipe Thread (PT Screw)
                                                                BrandNhãn hiệu

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                TRUSCO NAKAYAMA

                                                                Product SeriesDòng sản phẩm

                                                                Spiral Tap (for Metal Screws)

                                                                Hand Tap (for Metric Screws/SKS)

                                                                Hand Tap (for Metric Screws/HSS-E)

                                                                Round Die For Metric Screw

                                                                Hand Tap Set (for Metric Screws/HSS-E)

                                                                Hand Tap Set (for Metric Screws/SKS)

                                                                Point Tap (for Metric Screws)

                                                                Hexagonal Re-Threading Die (PF Screw)

                                                                Hexagonal Re-threading Die (Whitworth Screw)

                                                                Hexagonal Re-threading Die For Gas Pipe (PT Screw)

                                                                Hexagonal Re-threading Die For Gas Pipe (PS Screw)

                                                                Hand Tap (for Whitworth Screw Thread / SKS)

                                                                Round Die For Whitworth Screws

                                                                Hexagonal Re-Threading Die (Unify Coarse Screw)

                                                                Hexagonal Re-Threading Die (Unify Fine Screw)

                                                                Adjustable Round Die For Tapered Pipe Thread (PT Screw)

                                                                From

                                                                260,850 VND-

                                                                88,000 VND-

                                                                158,000 VND-

                                                                546,683 VND-

                                                                591,988 VND

                                                                Special Price

                                                                On Sale Till 04/12/2025

                                                                257,309 VND-

                                                                251,488 VND-

                                                                685,764 VND-

                                                                529,798 VND-

                                                                745,018 VND-

                                                                616,715 VND-

                                                                146,000 VND-

                                                                546,683 VND-

                                                                604,771 VND-

                                                                582,486 VND-

                                                                1,404,738 VND-

                                                                Days to ShipSố ngày giao hàng Same day or more Same day or more Same day or more Same day or more Same day or more Same day or more Same day or more 9 Day(s) 9 Day(s) Same day or more 6 Day(s) or more 9 Day(s) Same day or more 9 Day(s) 9 Day(s) Same day or more
                                                                Screw size (Nominal)M3 ~ M16M2 ~ M16M3 ~ M16M2 ~ M30M3 ~ M16M2 ~ M16M3 ~ M16G1 ~ G7/8W1 ~ W9/16R1 ~ R7/8R1 ~ R7/8W1 ~ W7/8W1 ~ W7/81UN ~ 9/16UN1UN ~ 9/16UN1 ~ 3/8
                                                                Screw TypesMeterMeterMeterMeterMeterMeterMeter-Whitworth--WhitworthWhitworth--Taper for Pipe
                                                                work materialLow-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]Low-Carbon Steel (carbon alloy less than 0.25%)[○]
                                                                Pitch (P), Number of Threading(mm)0.5 ~ 20.4 ~ 20.5 ~ 20.4 ~ 20.5 ~ 20.4 ~ 20.5 ~ 211 ~ 288 ~ 4011 ~ 2811 ~ 28-12 ~ 408 ~ 2014 ~ 28-
                                                                Tool Material TypeVanadium High-Speed SteelAlloy HSSVanadium High-Speed SteelAlloy HSSHigh-speed steelAlloy HSSVanadium High-Speed SteelAlloy HSSAlloy HSSAlloy HSSAlloy HSSAlloy HSS / SKSAlloy HSSAlloy HSSAlloy HSSAlloy HSS
                                                                Tap TypeSpiral TapHand TapHand TapDieHand TapHand TapPoint tapModification/removal ToolDieDieDieHand TapDieDie / Modification/removal ToolDie / Modification/removal ToolDie
                                                                Hole typeFor blind hole-For through hole / For blind hole-For through hole / For blind hole-For through hole---------
                                                                Chamfer threads (Lcf)2.5P1.5P ~ 9P1.5P ~ 9P---5P---------
                                                                Coating Type-Non-CoatedNon-Coated-Non-CoatedNon-Coated----------
                                                                Coating Y/N-NANA-NANA-----NA----
                                                                Overall Length (L)(mm)46 ~ 9540 ~ 9546 ~ 95-46 ~ 9540 ~ 9546 ~ 95----46 ~ 125----

                                                                Loading...Tải…

                                                                1. 1

                                                                Related Categories to Screw-Hole-Related ToolsDanh mục liên quan đến Screw-Hole-Related Tools