Adjustable Dumbbells Fast Weight Fitness

Why choose Fit Sir ? Fit Sit is patent in the USA and positions it at the high-end 55 lb dumbbells brand. It has been producing strength fitness equipment for the top gyms around the world for 10 years! With its revolutionary technology and design, Fit Sir was awarded the coolest 55lb dumbbells pair! Our 55 lb adjustable dumbbells help the disabled and other charities and give back to the society every year!   1 Second Fast Change Weight 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. The bead positioning structure is convenient for limit rotation. 55 lbs dumbbell does not stuck and it is very durable. Concave-convex Non-slip Silicone Handle The adjustable dumbell set handle of the adjustable dumbellsweights set of 2 is made of concave and convex soft silicone. The integrated anti-skid encapsulation process is both beautiful and non-skippy, whi