... washable,nickle-free,lead-free,dry-clearing, not easy to fade colour, can be arbitrary processingSize:3#,5#,7 ... for bulk QTY we can choose by seaApplication:easy to use for garments, shoes,etc.running very smooth Advantage ... lock slider,reversible slider,etc. and the size including from #2 to #10.We mainly produce metal zipper, nylon zipper ... question or concern, pls don't hesitate to contact us soon!