Metal Drilling Tools Accessories HSS Special Hex Shank White Finish Step Drill Bits
Material: HSS M42,M35,6542(M2),9341,4341,4241
Finish: Tin coated,coffee,bright,rainbow colour,Black oxide,Black flute & bright shank
Process: Roll forged,edge ground,fully ground
Standard: DIN 338 (jobber series), DIN 340 (long series), DIN 1897 (stub series)
Diameter: 4mm-39mm