The MX55 Rapid Change Dumbbell System features our unique MX Select patented rack & pinion selection system: compact size, balanced feel and totally secure.
With the MX55 Dumbbell cradled you select the weight from 10-55 lbs (4.5-24.9 kg) at the turn of a dial. The selected weight level is locked into place as soon as the selector dial is pushed home.
