... , wrench, grinding wheel, diamond tool, thread tap, ball nose, twist drill, HSS tool bits, gear hob,....Product DescriptionStandard: DIN341, DIN345, DIN1870 ... .4~23.02253155247364215470437250523.02~23.6276155348369220471437250523.6~25.0281160349369220472442255525.0~26.5286165350369220473442255526.5~28.0291170351412225574442255528.0~30.0296175352412225575445255530.0~31.5301180353412225576447260531 ...