PEPPERLONELY Brand, 20PC Silver Tone Carabiner Swivel Clasps For Key Ring Key Chain 4.1cm x 3.1cm(1-5/8"x1 2/8") Quantity: 20PC Size: 4.1cm x 3.1cm(1 5/8"x1 2/8") Hole size: / Thickness: 3.6mm( 1/8") Material: Zinc metal alloy(Cadmium Safe)