ASP Ultra Plus Rigid Restraints provide a major advance in both the design and construction of wrist restraints. Frame geometry is the result of extensive computer modeling and simulation analysis. Strength potential has been maximized through use of a 7075 T6 forged aluminum frame. The lock assembly is unitized and replaceable. To further conserve weight, the bows of these cuffs have been forged from aerospace aluminum. The unitized design is compact and ambidextrous with a minimal number of parts.

The Plus design allows the cuffs to be double locked without need of a key. This ASP innovation increases officer safety and subject security.