ITEM NAME:6pcs Hex Shank Drill Bit & Screw Thread Tap Taper Machine Hand Tool 6/8/10-32NC Product Description: Model: hex shank drill tapping integrated composite tap Handle: 1/4" quick change hex handle, shank diameter is 6.35mm. Product specifications: US-made six-piece set: 6-32NC (3.5mm), 8-32NC (4.2mm), 10-32NC (5mm), 10-24NC (5mm), 12-24NC (5.7mm), 1/4-20NC (6.35 Mm) Product material: high speed steel (HSS) 4341, high speed steel (HSS) 6542. 4341 material is suitable for low hardness materials such as wood, aluminum and iron. The 6542 (M2) material is high in hardness and more durable. It can be applied to steel plates or even thinner 304 stainless steel plates of about 2mm. Scope of application: This product is suitable for rapid drilling and tapping. Durable, it is recommended to use on the tapping machine. When using the hand drill, pay attention to the operation method. Excessive shaking and tilting will affect the tapping and even break the tap! ! ! Package Include: According to your Choose!.Scope of application: This product is suitable for rapid drilling and tapping. Excessive shaking and tilting will affect the tapping and even break the tap! Model: hex shank drill tapping integrated composite tap.