5mm Antique Silver Rounded Magnetic Clasp for Flat Leather. A simple rectangular clasp with smooth, rounded edges. Features an extra-strong square magnet. Length: 11mm, Width: 7.5mm, Height: 5mm. Hole size: 5.2 x 2.1mm. Zinc plated with 99.9% sterling silver. Free of lead, nickel, cadmium. Hypoallergenic. These ends cannot be crimped. You will need to use a super glue to glue in the leather.