ASP AutoKey Handcuff Key Black. This ASP AutoKey Handcuff Key w/ BackSet features BackSet which allows you to rub the tip back and forth over the surface of the cuff. The protruding shaft will fall into the keyhole. Hung on a keyring or carried in the pocket the ASP AutoKey Stainless Steel Handcuff Key is ergonomic and smooth with a simple push button that releases the back set for quick use. Specifications for ASP AutoKey Handcuff Key: Manufacturer: ASP Blade Material: Polymer Package Contents: ASP AutoKey Stainless Steel Handcuff Key ASP 56256: AutoKey Handcuff KeyBlack