... 3.Coating:Tin,Ticn,Alsin-A,Bright 4.Quality similar with OSG Thread cutting tap (NRT) Features: 1.Type:machine tap,hand ... :HSSE,CPM,CPS3.Coating:Tin,Ticn,Alsin-A,Bright etc4.Thread type:Long Chamfer Type or Short Chamfer Type5.Standard:JIS ... time work life7.Good wear resistance.8.The quality similar with OSG,but the price is very competitive. .