Engineered for strength, the BowFlex Results Series 552 SelectTech(R) 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. FEATURES: Quick adjustments dials: Switch between weight settings with a quick twist of the dials, from 5 to 52.5 pounds per dumbbell* Space-saving design: Get more workout in less space by replacing 15 separate weights with a single, all-in-one set Premium metal components: Reinforced with durable metal plates and a locking system to keep weights in-place Comfortable grip: An ergonomic, non-slip handle provides extra control and comfort with each lift Included storage trays; train with JRNY(R) on your phone or tablet free for 2 months* *Please be advised that due to tolerances in the manufacturing process, individual weight settings may vary from their stated weight values. Membership required for full JRNY(R) experience. Two-month JRNY Trial offer's availability is subject to change without notice. At end of free trial, JRNY membership automatically renews at membership rates until canceled. BowFlex SelectTech(R) dumbbells are the #1 U.S. Adjustable Dumbbells as ranked by Circana, U.S. Sports Equipment, Adjustable Dumbbells, Dollar Share, 2023-2025.