POWERBLOCK Elite Aluminum Adjustable 10 to 52.5-Pounds per Dumbbell Set Pair of adjustable-weight dumbbells for easy, space-efficient workouts Each dumbbell adjusts from 10 to 52.5 pounds in 2.5- to 5-pound increments Provides 915 pounds worth of free weights in the space of a single pair Black powder-coated weight plates in traditional square shape Ideal for building muscle mass and firming/toning your physique