BEADALON-Findings: Heart Lobster Claw Clasps. Heart lobster claw clasps add a touch of charm to your jewelry. These clasps use tension from a spring loaded mechanism to keep the clasp securely closed. Choose a jump ring or split ring to attach to the other end of your bracelet or necklace for the claw to grab on to. This package contains five 12x13mm silver plated clasps. Imported.