... dial; MOQ: 60 pieces(30 pairs) Fitness EquipmentAdjustable Dumbbell,Dumbbell Set,Dumbbell Stand,Barbell,Fitness Equipment,Gym Equipment,Exercise Equipment,Bodybuilding Machine ... , 40, 45, 50, and 52.5 pounds.The Bowflex SelectTech Dumbells use a unique dialing system to change the weight.Customer ... -year warranty is offered, any defective items will be compensated. Fitness Equipment Adjusable Dumbbell