PEPPERLONELY Brand, 10PC Black Lobster Swivel Clasps For Key Ring Key Chain 5.4cm x 3.3cm(2 1/8"x1 2/8") Quantity: 10PC Size: 5.4cm x 3.3cm(2 1/8"x1 2/8") Hole size: / Thickness: 17mm( 5/8") Material: Zinc Metal Alloy+Alloy(Cadmium Safe)