Enjoy the versatility of a free weights work station in the comfort of your own home with the Bowflex® SelectTech® super heavy dumbbells. With an adjustable weight range of 4-41kg, this single pair of dumbbells delivers the same results as 17 sets of weights – but without the clutter! A quick turn of the dial allows you to automatically change your resistance across 17 settings up to a maximum of 41kg per dumbbell. With such extensive versatility and the super heavy weight, they provide the most flexible strength-training options available, allowing you to gradually increase your strength. The wider weight range also means you can perform both heavy and light exercises. The result is a total body workout delivering the results you want. Featuring durable molding around the metal plates, the dumbbells are not only hard-wearing, but provide a smooth lift off. Removing the clanging of metal, you can enjoy more peaceful training allowing you to focus on your training goals. The new Bowflex SelectTech App is a great training tool which supports both iOS & Android users for the 2-24 KG (552) and 4-41Kg (1090) Bowflex SelectTech Dumbbells. Simply select which Dumbbell you have and the App will customise your experience (manual input only). If you decide to upgrade from the 2-24 KG (552) to the 5-60 KG (560)*, the App can seamlessly switch modes to support the new Dumbbell (*560 not yet available for international markets). Available in the App Store.