Center Drill Bit Set, TiAlN Coated Cobalt M35 HSS Centering Drill Bit
【Durable & Long-Life with Top Quality】M35 Cobalt High Speed Steel (5% Cobalt) with TiAlN Coating makes our center drill bit much harder, more wear-resistant, heat-resistant and durable. Arc-shaped root of the drill bit tip reduces the risk of breaking greatly.