Nickel Plated Rigid Folding Handcuffs Red Grip TCH handcuffs are made in the UK to the highest industry standards using best materials available. The TCH850R offers the perfect combination of the power and control you get from a standard rigid handcuff and compact mobility of a more traditional folding or chain handcuff. Once deployed the handcuffs lock firmly in to their rigid position which can only be released using the included standard issue handcuff key. 3 independently moving ratchet bars. 6 teeth on each bar. Locking positions – 25. Models 852 and 852B. 4 teeth on each bar. Locking positions – 21. 17% larger internal circumference than standard models. Rotating arm backloads for speed cuffing. Precision engineering ensures rotating arm swings through the handcuff, engaging the ratchet bars every time. Two standard keys are provided with each handcuff. Full compliance with the strength requirements of N. J Standard 0307.01.