Made of a continuous loop of sturdy stainless steel, the BigRing is perfect for those with more than the average number of keys. Large and roomy, yet lightweight and easy to carry, the BigRing comes with 8 #.5-sized Stainless Steel S-Biners® in two colors (4 stainless, 4 black) so you can easily identify keys at a glance. Or, use one of the S-Biners to attach the BigRing to a belt loop, purse strap, or zipper pull. The S-Biners remove and reattach quickly and securely, making it easy to share keys with co-workers, valets, babysitters, or for taking a single key with you when you're out for a run or ride.