Material: Our golden lanyard swivel spring hook and key ring are made of high-quality zinc alloy, free of lead and nickel, durable, rust-proof, and have a long service life. [Flexibility] The 360-degree most flexible keychain hook can be rotated in any direction and is easy to use. The lanyard spring hook is a snap closure accessory to ensure that your items will not fall. n Can be rotated in any direction, Easy to use. The lanyard snap hook is a snap closure accessory to ensure that your items will not fall off. Size: The total length of the golden lobster clasp is 31 mm/1.22 inches, the inner diameter of the ring is 1.1 cm/0.43 inches; the diameter of the key ring is 2.5 cm/0.98 inches. The size is right and it can easily match your handmade products.Uses: High-grade rotating spring hooks and key rings are suitable for lanyards, webbing, key chains, handbags, wallets, and also suitable for jewelry making, children's art projects and other small objects. Quantity: The set includes 50 gold lanyard spring clasps and 50 gold split key rings, a total of 100. A great choice for DIY key chain jewelry projects.