Made of a continuous loop of sturdy stainless steel, the Nite Ize BigRing Key Ring with S-Biners is perfect for those of us with more than the average number of keys. Attach, lock and remove keys with ease. Great for sharing keys with co-workers, valets, babysitters, or for taking a single key with you when youre out for a run, ride or errands around town. Large and roomy, yet lightweight and easy to carry Big Ring is made of sturdy stainless steel to be durable and long-lasting. The Nite Ize Big Ring comes with 8 #.5-sized stainless steel, double-gated s-biners in two colors (4 stainless, 4 black) to store keys safely and help you identify them quickly. The Nite Ize BigRing S-Biner & Ring measures 3.3 x 2.2 x .5 and weighs 1.3 oz. Big ring comes with 8 smaller s-biners, and can accommodate many more for larger key ring needs. Use one of the s-biners to attach big ring to a belt loop, purse strap, or zipper pull, or to hook to a second ring. Nite Ize has been creating innovative, solution-based products with quality, performance and value at the core for over 25 years. Based in Boulder, Colorado, we aim to continue offering imaginative and innovative products that make our customers lives easier, safer and more fun.