Detailed Product Description Zipper's Description: No. 4 nylon zipper, 2.4-2.5kg / 200yds, pack 200yds for a roll, 10rolls ... factory for making zipper, there are various kind of zipper, nylon zipper , plastic zipper and metal zipper, the specification content no.3, no.4, no ... .5, no.7, no.8 and no.10, make the coloration as you like, ...