twist drills:size :in metric,from 0.2mm to 20mm
size;in british,from1/64 to 5/8 inch
M42,M35,M2(6542),etc
fully ground,milled

HSS straight shank twist drill

Standard: DIN338size :in metric,from 0.2mm to 20mmsize;in british,from1/64 to 5/8 inchusing material:,,HSS-M42,M35,M2,9341,4341,4241.production technics:rolled forged,rolled&posished,fully ground,milledsurface finishing:black oxide,bright finished,titanium coated,black flute&white edge,amber
fimish &black flute,rainbow drills,zirconium coated,black flute&white shankSet:1.5--6.5mm:13pcs/set1.0--10.0*0.5mm:19pcs/set1.0--13.0*0.5mm:25pcs/set