HRC89 TiAlN Countersink Drill Bit M35 Cobalt Deburring Chamfer Drill Bit 2-5/5-10/10-15mm

Specification:  Material: HSS-Co/M35;  Coating: TiAlN Coating;  Hardness: HRC89;  Size: 2-5mm/5-10mm/10-15mm;  Shank Size: 1/4" Hex Shank;  Chamfer: 90°;     Uses:   High-speed steel cobalt / M35  TiAIN coating  (Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.) - Industrial-grade TiAIN coating  (More than 4241and 6542 high-speed steel materials, live longer!)     Features:  1. The same containing cobalt high speed steel material, the surface after a TiAIN coating, 3 times can prolong service life;  2. The TiAIN coating super high temperature resistance, can be in the case of without coolant, long time use, suitable for dry type high speed cutting. Industrial Grade TiALN Coating,TiAlN coating surface will form Al2O3 which form a hard protective layer when drilling.(Perfect for high speed drilling);  3. HSS - CO high speed steel after heat treatment + TiAIN coating surface hardness up to 89 degrees;  4. TiAI