The power block u90 club set are designed for use in commercial environments they are ideal for use where there is a limited space for multiple racks of dumbbells the u90 club dumbbell set includes stages 1 2 of the u90 range offering a weight range of 2 5kg 40kg per hand the club sets offer a choice of two handles in 2 5kg or 4kg to increase the range of weights offered by the set this is as opposed to having removable adder weights in the power block handles which could be lost or mis