Hot sell solid carbide twist drill bit Diameter: 1mm-30mm Coated: Tialn, tin (option) With high quailty, ... diliver in time and We supply you various drill bit, solid carbide drills, cemented carbide drills including step drill, twist dirlls ... the material your choosed. We also supply milling cutters, reamer, solid carbide saws, indexable insert, other tungsten carbide products. We accept ...