This beautiful designed Open Circles Steel Collar will look great around your neck. Put it on by loosening the Allen screw with the included Allen key, you can put it around your neck and then fasten the Allen screw once it is in place. There is a large O-Ring topped off with a fancy gem. This item is to be used as a kinky toy or as a jewel to finish your sexy outfit.This is a Medium sized steel collar with an inner diameter of 11,5 cm. Made from Kiotos stainless steel, clean with Kiotos Toy Cleaner to keep it hygienic for subsequent use.