Introducing the CAP 55 lb Pair of Adjustable Dumbbells with Contoured Full Rotation Handle that features the ADJUSTABELL weight adjustment system that is safe, quick, and easy to use! Simply turn the handle right or left to adjust the weight in 5 pound increments, pull up, and start your workout. Quickly and efficiently switch heavy weights for squats and lunges to lighter weights for curls and triceps extensions. No knobs to turn, pins to align, or levers to slide – just twist and go! The ADJUSTABELL weight adjustment system allows you to rapidly switch from one exercise to the next. The unique dial system combines 10 SETS of weights into ONE! The handles have a contoured, natural orientation for a comfortable, secure lifting position. Say goodbye to 10 sets of dumbbells and hello to the new ADJUSTABELL Dumbbell! US Patent 11,285,354