... pieces(30 pairs); custom brand acceptable The Bowflex SelectTech 552 Dumbbells have 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 ... plus exercises that can be done using the Bowflex SelecTech Dumbbells. Product FeaturesThe Dimensions are 15.75"L x 8"W ... .5, 10, 12.5, 15, 17.5, 20, 22.5,25, 30, 35, 40, 45, 50, and 52.5 pounds.The ...