Use this sleek, black matte acrylic magnetic clasp to finish off cord and lightweight stringing materials up to 4.3mm thick. Ideal for modern jewelry designs, this clasp offers an easy-to-use magnetic closure that is perfect for necklaces and bracelets made with leather, faux leather, rubber, silk, satin cord, or similar materials. Simply apply a small amount of glue inside each end, insert the trimmed cord fully into the clasp, and allow to set. We recommend Zap-a-Gap glue for secure bonding with most cord types.