... and tool accessories such as face milling cutter, carbide twist drill bits, carbide inserts(milling/turning), milling cutters, turning tool ... holders, collets, pull studs, boring cutters etc. 1.Carbide drill bits--our HOT products, we have different coatings for different ... meet your processing needs. 2.There are different types of drill bits, such as twist drills, center drills, spot drills, ...