The ASP line of Ultra handcuffs are made with a forged aluminum external frame that is very strong and damage resistant. This construction makes them substantially more rigid than the old-now discontinued ASP handcuffs, made with a steel inner frame and polymer over-mold. The lightweight aluminum swinging bows on these cuffs feature a smooth, sleek black finish that doesn’t reflect much light. All ASP Ultra handcuffs include the advanced features of their other handcuffs including smooth rounded edges and conical bows, double sided keyways, and interchangeable lock sets. These cuffs weigh a mere 6.9 ounces. 1 key included. With the security of these cuffs, they require oversized handcuff case.