Your partner will be at your beck and call wearing this sleek Chrome Slave Collar Featuring a stunning chrome finish, this collar looks as erotic as it feels. Exhibit true dominance by locking your partner into this o-ring compatible collar, attaching your favorite leash, and having them do your bidding Open and close using the included Allen wrench. Measurements: Inside diameter measures approx. 4.75 inches, Material: Chrome-plated steel, Note: Includes Allen wrench for opening and closing. O-ring compatible