... steel,iron, 4.many size available snap hook 1.eco-friend carabiner spring snap hook 2.plate:black,nickel ,anti silver, ... copper and so on3.material:zinc ally,stainless steelsnap hook,dog hook,key holder,spring hook1. Material:zinc alloy,stainless steel...2. plate ... from pantone8.. Usges: bottle holder, lanyard, bag, case etc9..we have SGS10.welcome OEM/ODM 2012 fashion steel bag,key,dog hook