sbs zipper , Nylon zipper, metal zipper, plastic zipper1" Specifications of SBS finished products are as follows:Nylon Zipper: 3#, 4#, 5#, 7#, 8#, 10#Metal Zipper: 3#, 3.5#, 4#, 4.5#, 5#, 8#, 10#Plastic Zipper: 3#, , 5#, 8#, 10#, 20#, 30#Invisible Zipper: 3#, 4#, 5# 2" Quality...