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. Medium/Large Size. Inside diameter measures approximately 5.75 inches. From XR Brands.