This dumbbell system from Bowflex saves you having to buy up to 15 different pairs of dumbbells. Each Bowflex SelectTech 552i dumbbell offers the possibility to train with weights from 2.3kg to 23.8kg. The adjustment system of the Bowflex dumbbell is very simple - set the desired weight with a rotary wheel on both sides. Only the weight discs required for the set weight are recorded. The dumbbell is then lifted out of the shell with the selected weight and you can start training. Thanks to the practical adjustment mechanism of the Bowflex SelectTech, the desired dumbbell weight can be set in no time at all. No more tedious changing of weight discs. The Bowflex SelectTech dumbbell offers functional full-body training for legs, back, chest, abdomen, shoulders and arms.