Keep your ferret contained by combining magnetic and tension principles to secure any cage. Made of attractive nickel-plated metal. Features a clam-shell, swivel-axis opening clasp and a magnetic-tipped, spring-loaded tension pin that combine to keep even the most determined escape-artist safe and secure inside his cage. Simple, yet unique, locking system requires tension to be exerted on two different points of the lock - a task no small pet or child can accomplish. Each lock measures 3/4" wide by 2" long. Each package contains 2 locks. Ever returned home from work to find your ferret had escaped from his cage and wreaked havoc on your house? Or, has your pet-loving child ever released his furry friend from the cage at the most inconvenient time? Either way, keeping your pet safe and secure inside his cage is paramount to good small pet husbandry - for the safety of your pet, your house, and your family. This lock keeps your pet inside his cage, while also allowing you to easily remove the lock when needed. Great addition to any cage, whether your pet is prone to escape or not. Ideal for use on any size ferret cage with any combination of horizontal and/or vertical wire cage bars.