Completely control your submissive with this exciting collar. It's made of metal and is quite heavy, as well as rustproof and very easy to clean. It locks securely with a combination padlock, ensuring there's no escape. A metal ring is attached to the collar, allowing you to attach toys such as ropes, chains, or handcuffs. Inner diameter: 12 cm Thickness: 1 cm Stainless metal With a ring for adding toys.