Caged Romanian Magnet Medium Size Green Veterinary Magnet Animal Magnet Length: 10 mm. Width: 25 mm Weight: 94 gr Two interlocking pieces of hard plastic and the magnet remain in between. The attraction is strong. It provides protection against diseases caused by foreign objects swallowed by animals. Its magnetic attraction is strong. The magnet's magnetic force is strong enough to pick up foreign objects and keep them inside the cage. It is made of durable solid material.