Composite Tap Drill Bit Set

This is an innovative tool set for drilling and converting. No need to change your drilling method. The new design of the bits, the conversion and locking is very precise, and it takes only a few seconds from drilling to driving. It is suitable anywhere if you want. High hardness, rustproof, solid and durable. Fast replacement composite cone, uses drill edged principle. Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc. Self-centering point, do not need assistant center drilling or center punching. Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency. Specifications: Color: Metal-gray. Material: High-speed steel 4341. Size: Type Diameter Handle Diamete Total length M3 3mm 6.2mm 66mm M4 4mm 6.2mm 67mm M5 5mm 6.2mm 67mm M6 6mm 6.2mm 68mm M8 8mm 6.2mm 70mm M10 10mm 6.2mm 72mm Package Include: 6 x Composite Tap Drill Bit. Notes: Due to the different monitor and