Lucky Line Nickel-Plated Tempered Steel 1/2 inch Diameter Split Ring, 100 Per Box (76000) DURABLE; 1/2 inch nickel-plated split ring; 100 per package will last through many uses SECURE; key rings designed to hold multiple keys securely RESILIENT tempered steel won't lose shape even after repeated use and bending VERSATILE; can be used for a variety of key sizes and shapes while holding them securely on the ring SOLID AND STRONG; made of nickel-plated tempered steel; will continue to hold its shape and remain secure even after many uses