Description: Material: Copper Total Length : 7.5cm; Clasp diameter 6mm These magnetic clasps with lobster clasp and extender chain, easy to install and disassemble. Great DIY magnetic clasps findings for necklaces, bracelets, earrings and other fashion accessories making. Magnetic Clasps are attractive and easy to fasten clasps for necklaces and bracelets compare to traditional jewelry clasps. Package Includes: 5 Sets Magnetic Lobster Clasps