PEPPERLONELY Brand, 20PC Silver Tone Hook Lobster Swivel Clasps Trigger Clips For Key Ring Key Chain 4.5cm x 3.1cm(1-6/8"x1 2/8") Quantity: 20PC Size: 4.5cm x 3.1cm(1 6/8"x1 2/8") Hole size: / Thickness: 5mm( 2/8") Material: Zinc metal alloy(Cadmium Safe)