The Bowflex SelectTech 552 Dumbbell has 15 weight settings, starting at 5,7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 pounds. The gradual increase allows the user to build strength slowly or to increase quickly to bulk up. Customers will find 30 plus exercises that can be done using the Bowflex SelecTech Dumbbell. Product Features The Dimensions are 15.75"L x 8"W x 9"H(40 x 20 x 23cm) each dumbbell. The weight ranges are 5lbs(2.27kg) to 52.5lbs(23.8kg). Starting at 5,7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 pounds. The Bowflex SelectTech Dumbell use a unique dialing system to change the weight. The need is eliminated for owning more then one set of dumbbells. Price listed is for 1 dumbell