Antique Silver Top Crescent Magnetic Clasp. This magnetic clasp features a loop on each side for securing chain, leather, or other fine cord. This piece is designed to sit on top or bottom on the wrist. Use with Z002290 to work with 5mm flat leather. Length: 57.5mm. Width: 6mm. Height: 5mm. Hole Size: 1.5mm round. Zinc plated with 99.9% sterling silver. Free of lead, nickel, cadmium. Hypoallergenic.