1) Co:10-12%... 2) Grain size: 0.5-0.6um 3) DIN or ANSI standard 4) Coated or not coated. 5) ISO 9001:2008... 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, long time drilling and Dry Machining. Diameter: 1mm-30mm Coated: Tialn, tin (option) With high quality, ...
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