Engineered for strength, the BowFlex Results Series 552 SelectTech Dumbbells provide all the advantages of an adjustable dumbbell in a durable design. Premium metal components, a locking system that keeps weights in place, and a comfortable, non-slip grip set a new standard for durability, so you can lift with confidence for years to come. Quick adjustment dials give you the power to easily switch between weights, from 5 to 52.2 pounds. And the all-in-one, space-saving design replaces 15 sets of weights with one so that you can up the challenge as you get stronger. | Bowflex | | Results Series 552 SelectTech Dumbbell Pair | Black | Best Buy