1.standard: BS, DIN ,American 2.banded , beaded ,plain 3. hot deep galv, bake galv, black 4.size from 1/8'- ... caps, etc.Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden boxesQuality ...