Hampton Dura-Prostyle Urethane Round Dumbbells have a compact design which allows you to store using both vertical and horizontal racking systems. This allows access to this dumbbell in a variety of free weight applications. The compact head design allows for maximizing absorption Ð necessary for a commercial setting. Hampton's unique 35mm contoured handle features a fine coarse knurling. This design supports the natural arch of the hand and gives the end-user an exceptional experience in every workout. The Dura-Prostyle Dumbbell delivers comfort, function and durability - the foundation of what club owners and gym members have come to expect.