This Beautifull Classic Steel Collar with gem will make you look like a BDSM Star. Simply put it on by loosening the O-Ring screw by turning it anti-clockwise, you can put it around your neck once in place lock it by turning in the O-Ring scew clockwise. There large O-Ring is finished of with a fancy gem, use the O-Ring to attach anything you like. This item is to be used as a kinky toy or as a jewel to finish your sexy outfit.This is a Large sized steel collar with an inner diameter of 13,5 cm. Made from Kiotos stainless steel, clean with Kiotos Toy Cleaner to keep it hygienic for subsequent use.