These adjustable dumbbells replace 15 sets of weights. Weights adjust from 2 to 24 kg (5 to 52.5 lbs). Easy-to-use selection dials for adjusting weights. Easily switch from one exercise to next and with the turn of a dial, you can change your resistance, enabling you to gradually increase your strength. Versatile workout for your legs, back, chest, abs, shoulders and arms. Compatible with the free Bowflex SelectTech® training App for iOS and Android.Key Features Select the Weight You Want with a Turn of the Dial - No more picking up 30 different dumbbells to give you the results you want! Space Efficient - Say goodbye to 15 sets of dumbbells cluttering your workout space. Wider Weight Range - With a weight that adjusts from 2 to 24 kg (5 to 52.5 lbs), you'll continue to see results as your fitness level improves. Quieter Workouts - Durable moulding around metal plates provides for a smooth lift-off and quieter workouts...no clanging metal plates! Total Body Results - With the wider weight range you can do heavy exercises such as shrugs and lunges as well as lighter exercises such as curls and raises. Premium Grips Available AccessoriesBowflex SelectTech Media Rack StandSpecifications Weight Range: 2 to 24kg for each dumbbell 15 Weight Settings: 2, 3, 4, 5, 7, 8, 9, 10, 12, 14, 16, 18, 20, 23, 24kg Dimensions: 40cm (L) x 20cm (W) x 23cm (H) What's Included?1x Bowflex 552i Adjustable Dumbbell (Sold Individually)OR 2x Bowflex 552i Adjustable Dumbbell (Sold Individually) 1x Bowflex SelectTech Media Rack Stand