[1 Second Fast Change Weight] Adjustable dumbells you need only to turn the adjustable dumbbells set handle gently with one hand, align the pointer with the corresponding number to quickly combine 5 different adjustable weight in one second. Core adjustable dumbbell set bead positioning structure is convenient for limit rotation. 55 lbs dumbbell does not stuck and it is very durable. [Ultra-durable PP Coated Steel Dumbbells Piece] The dumbbell adjustable weights plate adopts a unique seven-sided angular design. Dumbellsweights set adjustable makes your worriless on the rolling of your adjustable hand weights when using dumbbell 25lb. The 55lb dumbbells set interior is made of pure steel,which is thick and does not rust.The 55 lbs dumbell exterior is wrapped with high-strength PP material,adjustable weight dumbbells which is anti-drop and anti-rust,weight changing dumbbells reduces noise and impact on the floor during usage. [5 in 1 Weight Selection] The compact design of 55 pound dumbbells set occupies only a laptop space of 0.08 square meter. Select a weight dumbbell set weight range of this adjustable free weights to 15LB, 25LB, 35LB, 45LB and 55LB. It can replace your multiple sets of dumbbells! [Push Up Function] This adjustable dumbbell set 55 lbscan be used not only as a basic selectable weight dumbbells exercise, but also for push-ups. Stackable dumbbells can exercise your arm muscles, hip muscles, shoulder muscles, abdominal muscles, and thigh muscles in an all-round way. [Suit for Man and Women & 1 is enough] Adjust dumbbells can easily switch the weight among 15-55LB. 55lb dumbbells is a medium lightweight dumbbells. Dumbbells 25 can be used for basic sports training. The core home fitness adjustable dumbbell set 5-55 lbs are suitable for men and women at all ages.