Adjustable Dumbbell, 22lb/25lb/44lb/52lb Single Dumbbell Set with Tray for. Adjustable Weight - Come with 2pcs dumbbell set. Each adjustable weight dumbbell features free weight adjustment from 3- 8-12-17-22lb, the total weight of dumbbell set is 44lb. Suitable for beginners to professional. Committed to meet your needs for diversified weight training, it is a great choice for modify muscle lines and strong muscle fibers Safe Locking System- We are applying a strong structural and 100% safety ensured lock system both on the counterweight and on the tray, which ensure the dumbell set are fastened stably and tightly to ensure your safety.No more weight plate fallen off during exercise Unique Dial System- One-handed operation design, convenient for fast changing dumbbells' weight during training. Just use a single hand to rotate the handle bar, and adjust to desirable weights when you are training Space Saving- All-in-One design combines, only need 1-set of dumbbell space, you can have 5-sets of dumbbell training experience. Also you could combine all of them in just 1 compact tray system, which saves 80% of your space. Easy to use and store Versatile Dumbbell- With our adjustable dumbbell you can truly get a total body workout like shrugs, lunges, curls and raises; make the exercise funny. Using with dumbbell tray, enjoy the smoothly training process Notice- If you find that the handle can't rotate, try changing the direction.