This is an innovative toolset for drilling and converting. No need to change your drilling method. The new design of the bits, the conversion and locking are very precise, and it takes only a few seconds from drilling to driving. It is suitable anywhere if you want.
HIGH QUALITY MATERIAL
The countersink drill bit is made of high carbon steel material with titanium nitrate coating. High hardness, durable and offer superior cutting power. Three-Pointed design can quickly and accurately drill a smooth hole. Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.
Perfect for granite, tile, glass, quartize, ceramic, vitrified brick etc. Suitable for bench drill, hand drill and conventional electric drill.
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.They are ideally suited for machine and vehicle maintenance specified metric thread.
The 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.
Material: High-Speed Steel 4341
6 x Composite Tap Drill Bits
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