The U-90 Stage II Set is expandable later to 125 lbs per hand with the U-90 Stage III Kit. The U-90 Stage II Set has a weight range of 5-90 lbs per hand and will replace 28 pairs of dumbbells or 2565 lbs of free weights.

Increments achieved with the U-90 Set are; 2.5, 5, 7.5, 10,15, 17.5, 20 25, 27.5, 30, 35, 37.5, 40, 45, 47.5, 50, 55, 57.5, 60, 65, 67.5, 70, 75, 77.5, 80, 85, 87.5 and 90 lbs per hand.