The Cardio Pro adjustable dumbbells adjust from 4kg to 40kg, allowing you to maximize your workouts like never before. Sold as a pair, easily go from one exercise to another with the turn of a dial. Gradually increase and improve your progression by increasing the resistance of the dumbbell which will help you achieve maximum gains. Ideal for training back, legs, chest, abs, arms, and shoulders, these dumbbells are perfect for any home gym. These premium dumbbells allow the user to adjust the weight to the perfect setting, removing the need for numerous sets of dumbbells. Simply twist the center handle to instantly increase or decrease the weight loading and start exercising.