The Zak Tool #10 nickel plated handcuff key is manufactured to open most standard handcuffs. This handcuff key is 3.25" long and features a knurled section making it an easy to grip handcuff key. This key will open standard Smith & Wesson, Peerless, ASP, Hiatt, CTS, Chicago handcuffs and more. Zak Tool offers a lifetime warranty on all their handcuff keys. Key ring is included.