5# brass zipper 1 double sider 2 Nylon,plastic material can be waterproof 3 used for bags, boots,trunks 4 3#,5# 8#,10# 5# ... slider, , water proof zipper etc.2 Type:Finished zipper and long chain are both available3 Teeth color: brass, antique brass, antique silver, black ... 3 slider against top stop4 pull pull of strength 5 pull twist of strength 6 reciprocation life (5000times) 5# brass zipper