This sparkling designed steel collar has multiple gems and makes you look like a queen or king. Put it on by loosening the allen screw with the included allen spanner, once around your neck tighten the allen screw once it is securely in place. There is a large O-ring so you can attach anything you like. This item can be used as a kinky toy or as a piece of jewelry to complete your sexy outfit. This is a medium sized steel collar with an inner diameter of 11.5 cm. Made of Kiotos stainless steel, clean after each use with Kiotos Toy Cleaner for extra hygiene.