This KeyRing Locker is equipped with five durable locking S-Biner MicroLocks made of polycarbonate, securely attached to a solid stainless steel ring. Each S-Biner MicroLock can hold up to two keys and is easy to attach and remove from the ring. It is securely locked with a simple twist of the lever in its center. Perfect for quickly and easily passing a key to colleagues, family members, babysitters, or parking attendants, or for retrieving a key while jogging or going to the opera.