HSS TWIST DRILL BITS
Standard: DIN338, DIN340, DIN1897, DIN345, ANSI jobber length, stub length.
Shank: straight shank, taper shank, double end, reduced shank
Finishing: bright, black oxide, black & white, amber, titanium coated.
Material: cobalt M35, HSS M2, HSS4341, HSS4241
Process: fully ground, half ground, roll forged