Versatile Adjustable Dumbbell Set: The adjustable dumbbell weights can be used as dumbbells and barbells. The dumbbells can be 5-44 lbs, and the barbell weights can be 11-44 lbs. 44 LB Package Included: 4 x 4.5 lb dumbbell weight plates, 4 x 3.5 lb dumbbell weight plates, 4 x 2.5 lb dumbbell weight plates,2 x dumbbell bars, 1 x connecting rod, 8 x nuts. Double Locking to Ensure Your Safety: There are 2 types of fixing nuts to ensure your safety. Just assemble the dumbbell plates with 2 nuts and you can get different weights to start exercising. Comfortable Foam Bar Connector: The connector is made of soft foam, which can protect your shoulders well when you use it as a barbell. The dumbbells are coated with high-quality PE, which is harmless to your body. The dumbbell weights are filled with different proportions of iron sand, which is sturdy . Great for Home Gym: The dumbbell weights can be used as 2 types of dumbbells and 2 types of barbell weights to meet your different needs for exercising in your home gym. It is also easy to store and saves space.