6 Packs High-Speed Steel Combination Drill & Taps Bit Set Three-Function Machine Screw M3/M4/M5/M6/M8/M10

OverviewSpecification: Material: High-speed steel(HSS 4341) Color: GOLDEN Shank: 1/4"" (6.35mm) hex shank Size: M3, M4, M5, M6, M8, M10 Center punch material: iron, high-speed steel punch head, brass protective coating Usage: Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc. Description : 1.High hardness, rustproof, solid and durable. 2.The advantage is opening, tapping, chamfering. 3.Self-centering point, do not need assistant center drilling or center punching. 4.Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency. Features : 1. Save processing steps and time costs, improve efficiency 2. Spiral groove, within the processing thread, cutting up to exclude, and was curled applied internally threaded through holes Package include: 6 x Compound Tap Drill Bits