We can provide threading inserts: A.ISO,UN,NPT,BSPT,W stanard. B.100% guaranteed. C.Longer tool life and lower price can decrease charge. D.TiN and TiALN coated. E.The following specificationcoated TIN are in our stock 16ER/IR AG55,16ER/IR AG60 16ER/IR 1.0ISO,16ER/IR 1.5ISO,16ER/IR 2.0ISO,16ER/IR 2.5ISO,16ER/IR 3.0ISO 16ER/IR11W,16ER/IR14W 16ER/IR11BSPT,16ER/IR14BSPT 16ER/IR11.5NPT,16ER/IR14NPT 16ER/IR12UN,16ER/IR14UN,16ER/IR10UN,16ER/IR8UN,16ER/IR16UN,16ER/IR18UN 11IR1.0ISO,11IR1.5ISO,11IR2.0ISO 22ER/IR N55,22ER/IR N60 22ER/IR4.0ISO F.The grade is SMX30,it is universalgrade,can be used to cut steel,stainless steel and iron