5LB-52.5LB dumbell,Powerful results at the turn of a dial. ... can gradually increase your strength without bulking up3. This 522 dumbbell can adjust scope :5, 7.5, 10, 12.5, 15 ... .5, 20, 22.5,25, 30, 35, 40, 45, 50,52.5 LBS4. One of the most space-efficient and flexible ... the next - less time wasted, more time getting fit! Adjustable Dumbbell 552 FT5140