Powertrain 20kg Gen2 Home Gym Adjustable DumbbellWith the simple twist of the handle you're ready to go with this new remarkable adjustable dumbbell. The innovative locking mechanism secures only the weights that you want, a second is all it takes to change the weight of this dumbbell. This means that you waste less time switching weights and spend more time building muscle to achieve your goals. The Powertrain Adjustable Dumbbell's ergonomic design makes it the most space efficient and flexible