1.Type:Cobalt spiral tap. 2.Material:HSS,HSSE 3.Coated:Tin,Ticn, ... :M,UNC,BSW with JIS spiral taps Features: 1.Type:cobalt spiral taps .2.Material:HSS,HSSE3.Coating:Tin,Ticn,Bright ... ,CNC,Auto lathe,machine center.7.Working material:Different kinds of materials like Aluminum,Casting aluminum,Copper,Brass,Carbon steel,Stainless ...