SAFE : These lead and nickel free Silver Plated zinc alloy lobster claw clasps are great for your jewelry making and repairing needs. SIZE: You will get a total of 500 pieces (12 x 6 mm) lobster clasps. DURABLE: The sturdy and well quality made clasps ensure a solid closure. USE: They are perfect for necklace and bracelet making. Use these beautiful shining clasps for all your creative craft and jewelry making projects.