3 Sec Weight Adjustment Dumbbells are very easy to use. No assembly needed and they can be adjusted simply by turning the dials to the desired weight on each side. The mechanism handles the rest.

Yes. With the 3 Sec Weight Adjustment Dumbbells – Beginner Version, the weight can be adjusted from 5 to 52.5 lbs (2.26 to 23.7 kg). From 5 to 25 lbs (2.26 to 11.3 kg) increments of 2.5 lb (1.13 kg) are used; from 25 to 52.5 lbs (11.3 to 23.7 kg) adjustments are made in 5 lb (2.26 kg) increments making it flexible enough for strength trainers at different levels. The 3 Sec Weight Adjustment Dumbbells – Professional Version can be adjusted from 10 to 90 lbs (4.5 to 40.8 kg) in 5 lb (2.26 kg) increments for anyone looking for a intense workout.

Simply turn each adjustment knob to the number of the desired weight. You will know you have fully and correctly selected the number when you feel the adjustment knob settle into a notch and you hear a clicking sound.

3 Sec Weight Adjustment Dumbbells’ compact design replaces an entire set of dumbbells, hence saving a tremendous amount of space in your home. The locking mechanism sets it apart from other adjustable dumbbells by locking in properly positioned weight plates so they won’t separate from the handle. The sleek, smooth design enhances your workout area.

Covered with a unique injection-molded plastic, 3 Sec Weight Adjustment Dumbbells won’t clank and clatter when they are set down. The cover also keeps weights from scratching floors or other surfaces they might touch. And no matter how sweaty the workout gets, they are protected from corrosive rust.

Yes. 3 Sec Weight Adjustment Dumbbells allow you to work your entire body: biceps, shoulders, core and legs.

3 Sec Weight Adjustment Dumbbells provides the unique option of offset weight selection. Offset weight selection involves using a different weight setting on one side of the dumbbell relative to the other, assisting in supination and pronation of the wrist and forearm. During offset weight selection, the combination of weight plates selected will not be the same on both sides of the dumbbell, so it must be returned to the base in the same orientation that it was removed.

The Dumbbell Rack is optional but recommended. The rack ensures correct positioning when lifting the weights to help avoid back injury.