... :HSS SFT spiral flute taps. 2.Material:HSS,HSSE 3.Coated:Tin,Ticn,Bright,H,Alsin-A 4.Thread type: ... M,UNC,BSW with JIS. HSS SFT spiral flute taps Features: 1 ... .Type:HSS SFT spiral flute taps.2.Material:HSS,HSSE3.Coating ... :Tin,Ticn,Bright,H,Alsin-A,etc4.Thread type: ...