16mm Antique Silver Round Smooth Barrel Magnetic Clasp for 6mm Round Leather. Features a large, strong magnet and the standard pull apart closure. Ends cannot be crimped. Will need super glue to glue into leather. Length 16mm, width 10mm, height 10mm, hole size 6mm round. Zinc plated with 99.9% sterling silver. Free of lead, nickel, cadmium. Hypoallergenic.