If you want to get a good strength workout at home, but don't have much space, the Bowflex 552 SelectTech Dumbbell is an ideal solution. Newly designed, the innovative  552 SelectTech Dumbbell combines 15 sets of weights into one using a unique dial system. It's one of the most space-efficient and flexible strength-training options available with its unique and effective design. With just the turn of a dial, you can automatically change your resistance on dumbbell from 5 pounds all the way up to 52.5 pounds of weight. It adjusts in 2.5-pound increments (up to 25 pounds), enabling you to gradually increase your strength without bulking up.  Specifications:       Change the dumbbell's weight with just the turn of a dial.          Exercises Available: 30+     Weight Settings: 15     Weight Settings in pounds: 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 pounds     Dumbbell Dimensions: 15.75 inches long by 8 inches wide by 9 inches tall     Weight (Each): 52.5 pounds / 23.8 kg