... ring, key chain, metal key ring, stainless steel key ring, promotional gift key ring, key chain, promotional gift, metal key ring, stainless steel key ring ... · Materials: brass, iron, aluminum, stainless steel, zinc alloy, PVC, silicone· Plating: gold, silver, bronze, nickel, chrome, copper· Processing ... : chain, snap hook, key ring, leather strip etc.· Color reference ...