The push-pull design can quickly change the weight to any weight you need, which is very easy to use. Simultaneously, customized base to prevent bumps and not damage floorboards, suitable for home use. Adopt metal grips, cross-texture on the surface, reducing palm touch, stable bearing, and no slipping. Heavy dumbbells are perfect for building massive muscle in arms and shoulders, stability, and core strength. Lighter dumbbells are nice additions to add resistance to squats, lunges, aerobic workouts, and many more. Wants to build strength, burn fat, and create a shapely body, free weight training with a dumbbell is more effective than exercise machines. Add weights to workouts to gradually increase muscle for a calorie-burning boost. Suitable for greater body challenges during lunges, squats, bicep curls, shoulder presses, or back rows. The greater part is this dumbbell also comes with a tray for secure storage of your units, without devoting too much floor space, and keeping your home gym well organized.