Shipwreck Beads Electroplated Brass Slide Magnetic 3-Strand Clasps, 20 mm, Silver, Set of 3 Rounded lobster claw clasps are ultra-economy clasps Made of electroplated brass For use in multi-strand necklace or bracelet designs Works great with a 4-6-mm split or jump ring finding Measures 20-mm length; comes in 3/set