... 22ER 11IR/16IR/22IR etc.. Items are ISO,A,AG,G,W,UN,NPT,ACME,API carbide internal & external threading ... 16ER/22ER11IR/16IR/22IR etc..Items are ISO,A,AG,G,W,UN,NPT,ACME,API et1.tolerance below +0. ... .best price 16 EL 1.5 ISO LDC16 ER AG 60 LDA16 IR A 55 LDA16 ER 1.0 ... .75 ISO LDA16 IR 1.0 ISO LDC16 IR AG 60 LDC16 ER 1.75 ISO LDC16 IR 1 ... LDC16 IR 8 UN LDC 16 ER AG 60 K1516 IR 8 W LDC 11 IR 0.5 ISO LDA22 ...