The ASP Ultra Plus Hinge Training Handcuffs are identical in design and materials to the 'live' duty version of ASP's revolutionary Ultra Cuffs but offer keyless, self-release capability, improving both the speed and safety of training. These training-specific restraints take ‘real-world' training a notch higher, with a special lock set that disengages when subjected to back pressure- hence, the cuffs open with just a roll of the training subject's wrists. Double locking, a crucial safety step, is accomplished instantly just by pressing the double lock bar with a fingertip. The indicator is color-coded for quick visual recognition. Engineered for optimal efficiency and safety for all involved, these training handcuffs are your perfect training tool.