... CPS 3.coating: bright,Tin,TiCN, ALSIN-A,Oxide 1. Type:thread screw maker, roll forming tap, spiral fluted tap, ... spiral pointed tap2. Size: M1 to M16, NO.1-64C ... 3. Type: Plug, Bottoming and Modified bottoming style.4. Thread Type: Long and Short chamfer.5. No. of lube grooves ... most suitable coating for your working material. thread screw maker