1.Description:Drill Bit, HSS Drill Bit 2.Material:HSS ,HSS Cobalt 3.Degree:118 and 135 4.Used for drilling metal HSS twist drilltwist drill bitHss twist drillfull ground drill bit1.manufactory process:roll forged,edge ground,fully ground2.Finish:Tin coated,coffee,bright,rainbow colour,Black oxide,Black flute & bright shank3.Material:HSS M42,M35,6542(M2),9341,4341,4241 HSS DRILL BIT