The Power Block U90 Stage 1 adjustable dumbbells offer a weight range of 2
- 22.5kg (4.4
- 49.6lbs) per hand & are expandable to 41kg (90.4lbs) per hand with the U90 Stage II add on kit & again to 57kg (125.6lbs) per hand with the U90 Stage III add on kit. They replace 16 pairs of dumbbells or 374kg (824.5lbs) of free weights & are supplied as a pair.