6pcs M3-M10 Combination Drill Tap Bit Set HSS Industrial TiALN Coated Deburr Countersink Drill Bits

Specifications:  Material: High Speed Steel;  Coating: TiALN Coating;  Size: M3-M10;  Shank: 1/4 Inch Hex;     Features:   1. The TiALN coating will protect you drill bit well and make a better drill performance and use life;  2. High hardness, rustproof, solid and durable;  3. The advantage is opening, tapping, chamfering;  4. Self-centering point, do not need assistant center drilling or center punching;  5. Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc;  6. Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency;  7. Suitable for cutting the steel even the 2mm 304 steel.     Package Includes:  6 x M3-M10 Combination Drill Tap Bits