Chuzhao Wu Silvery 1.5" Tone Lobster Swivel Clasps With 0.8" Key Ring Key Chain (Pack Of 15) Lobster Clasp Length:1.5'', key ring Diameter:0.8''. Material: Zinc Metal Alloy+Alloy(Cadmium Safe)? Lobster claw snap hook with spring-loaded automatic gate ? Full 360 degree swivel eye helps prevent tangles? burly swivel clasps are great for large chain designs, purses, back packs, designer dog leads, color?