... dial, you can automatically change your resistance on each dumbbell from 5 pounds all the way up to 90 pounds of ... -pound increments (up to 25 pounds), enabling you to gradually increase your strength without bulking up.Feature:1) Weight Range: 5 ... , 35, 40, 45, 50, ...90pounds;3) Lets you rapidly switch from one exercise to the next;4) Combines 15 sets of ...