This Zak Tool #11 black swivel handcuff key is made to last a lifetime. Constructed of heat treated stainless steel this handcuff key will open standard Smith & Wesson, Peerless, ASP, Hiatt, CTS, Chicago handcuffs and more. This key is 3.75" long and is knurled for an easy grip. Zak Tool offers a lifetime warranty on all their handcuff keys. This is one of Zak Tools top selling handcuff keys.