Description: Barrel Tube Column Magnetic Clasps. Necklace Bracelet Connector Fastener Finding DIY Jewelry. You can use these magnetic clasp with round cord or leather. Glue on leather or cord into a clasp. Perfect for making necklaces, chokers, bracelets and more. Material: Brass and Magnetic Total Length: Approx. 20 mm / 0.79 inch Hole size: Approx. 6 mm / 0.24inch (fitting for 6 mm Leather-Kumihimo Cords) Package Includes: 5 Sets Magnetic Clasps