KUB Rigid Spreader Bar Stocks - Antique Replica Wrist Neck Restraint. These cuffs open with an allen style key and locks into one rigid locking position. This item is new and include one key. This screw style key is not a standard handcuff key and will only work with this lock. Do not lose the key or you will be out of luck This handcrafted item is made of stainless steel. It's heavy but comfortable, and a very unique addition to your collection. These replica antique items are sold as a novelty item, not intended for police use. All items are shipped discretely in unmarked packaging. PLEASE NOTE: Measurements are average. Handmade items can vary up to 10% in size.