... ISO2000 CERTIFICATED HSS Drill Bits,ASME B.94.11M-Screw Machine Length, Fully Ground. ISO2000 CERTIFICATED ASME B.94.1 ... --Screw Machine Length Twist Drill BitsManufacturing process: rolled, milled, fully groundPoint ... TIN Coated,Rainbow Color,Bright,Black & Bright,Zirconium Coating,Black,Coffee Color, etc.Diameter: 1-20mmItem No.:TY-H025Kindly contact ...