We profesionally produce and supply straight shank HSS twist drill bits
Standard:DIN338

Production technics:
1.Roll forged;
2.Roll & polished
3.Milled;
4.Fully ground

Surface finishing:
1.Bright
2.Black & gold
3.Black & Bright
4.Coffee color
5.Rainbow color
6.Tin coating
7.Black finishing
8.Zirconium coating

Using Material:
1.HSS M2 ( 6542) / W9 ( 9341 ) / W4 ( 4341 ) / 4241 for roll forged
2.HSS M42 / M35 / M2 ( 6542 ) / W9 ( 9341 ) for milled
3.HSS M42 / M35 / M2 ( 6542 ) / W9 ( 9341 ) for fully ground

Cutting edge:
1) 118°Or 135°Split point
2) 118°General angle
3) 135°General angle

Metric Size ( mm ) as below:
0.2, 0.22, ^ ~ 1.0, 1.5, 2.0, 2.5, ^ ~ 20.0mms

Note:Split point drills available from 3mm and above sizes.