1) Co:10-12%
2) Grain size: 0.5-0.6um
3) DIN or ANSI standard
4) ISO9001:2000
5) Coated or not coated

polishing carbide drill (with straight shank)
Diameter: 1mm-30mm
Coated: Tialn, tin (option)
casting iron,aluminium process

We supply you various drill bit, solid carbide drills, cemented carbide drills including step drill, twist dirlls, center drills, drills with straight flute, suitable for high speed, lone time drilling and Dry Machining.

Attention: The price is different because of the different grade of the material your choosed.
We also supply  milling cutters, reamer, solid carbide saws, indexable insert, other tungsten carbide products. 
We accept the specification as your requirement.