HSS twist drill bits
We produce all kinds of HSS twist drill bits,the details include:
1)standard: DIN338,DIN1897,DIN340,ISO235,ANSI B94. 11M,DIN345,DIN 1870
2)material::HSS 4241,HSS 4341,HSS 9341, M2(6542), M35,
3)manufactory process:roll forged, edge ground , fully ground , milled
4)point angle : 118 degree,135 degree split point
5)surface finished:bright finished , black oxide , tin oxide , black flute & bright shank , rainbow
6)flute type:N or VA