Threaded Carbide Drill Bits , Self Centering Drill Bit Small Diameter Hex Drive

High Hardness High Precision Tungsten Carbide 2 Flute Twist Drill Bit For Aluminum Products Function 1. HRC: HRC45 HRC55 HRC58 HRC60 HRC65 2. Coated: AlTiN, TiAlN, TiAISI,TiSiN, TiN, DLC,Nano, Diamond 3. Could be used for the processing of plastic,wood, Aluminium.copper Products Feature Special designed drill tip: Special designed drill tip will increase the Centering Ability and Chip breaker ability. Thus,the processing efficiency will be increased. Much sharper cutting edge