... , diamond tool, thread tap, ball nose, twist drill, HSS tool bits, PCD diamond insert, gear hob,....Carbide Fixed-point Drill ... Bits 1, Suitable for Mould steel, Cast iron, Aluminum alloy, Copper, and Alloy steel processing. 2, Mainly ... drilling the hole for the workpieces. We can supply standard and non-standard sizes tools as per your requirements. If you ...