The U 50 replaces 20 pairs of dumbbells in the space of 1 pair. The U 50 has a weight range of 5-50 lbs per hand and offers these increments: 2.5, 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 27.5,30, 32.5, 35, 37.5, 40, 42.5,45, 47.5 and 50 lbs per hand.












