These Handcuffs represent the premiere in handcuff technology and design. The Ultra handcuffs by ASP are made with a forged aluminum external frame that presents a lightweight, rigid, and sturdy set of cuffs. This makes them substantially more rigid than even the standard ASP handcuffs that are made with a steel inner frame and polymer over-mold. This, along with the rounded edges, conical bows, and steel swinging arms ensures that the Ultra Cuff line swings through accurately without the possibility that they will flex out of alignment when arresting an uncooperative suspect. ASP Ultra handcuffs include a host of advanced features including double sided keyways and interchangeable lock sets. This set comes with a 2-pawl locking mechanism, making it much harder to pick of shim, and uses a special key specifically made for this model. Weigh 8.9 ounces. 1 key included. Requires oversized (or any ASP brand) handcuff case.