1.Thread cutting tool,machine tap 2.Material:HSSE,CPM,CPS 3.Coating:Tin,Ticn,Alsin-A,Bright 4.Quality similar with OSG Thread cutting tap ... (NRT) Features: 1.Type:machine tap,hand tap2.Material:HSSE,CPM,CPS3 ... .Coating:Tin,Ticn,Alsin-A,Bright etc4.Thread type:Long Chamfer ...