Bowflex SelectTech 552 Adjustable Dumbbell (Single)

Smooth Lift-Off and Quieter Exercises: Durable molding around the metal plates allows for a smooth lift-off and quieter workouts. Larger Weight Range: You can conduct heavier workouts like shrugs and lunges as well as lesser activities like curls and raises with a wider weight range. With a turn of the dial, you can choose the weight you wish. Weight Range: Each dumbbell adjusts from 5 to 52.5 pounds in 2.5-pound increments up to 25 pounds.