Forged aluminum frame Conical, flat contact bow Dual-sided, single-turn keyways Replaceable Lock Sets The original ASP Ultra Cuffs set a new standard in restraint design, technology, features and application. And Ultra Plus Cuffs raise the bar again, with the addition of a major new feature: keyless double locking. Double locking - a critical step in ensuring both subject and officer safety - is accomplished simply and instantly, simply by pressing the double lock bar with a fingertip. The bar is color-indicated, for instant recognition of double lock status - once cuffs are applied and set, if you see the indicator, press it. This makes double locking faster, easier and less likely to be skipped or overlooked. And because a key no longer needs to be accessed or present during the cuffing process, it&';s even safer for all involved. Other than the revolutionary keyless double lock, &';&';Plus Cuffs&';&'; share all the same features that make ASP Ultra Cuffs the gold standard among restraints.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }