Shipwreck Beads Lead Free Zinc Alloy Lobster Clasp, Antique Copper, 6 by 12 mm, 40-Pack Lobster claw clasps are a great choice for economical jewelry designs Made of lead-safe zinc alloy Secure with a 4-6-mm split or jump ring finding and or a crimp bead Available in antique copper color Measures 6-mm by 12-mm; comes in 40/pack