The Athletic Works 40LB 5 in 1 Adjustable Dumbbell Set is a versatile fitness exercise set designed for home use. This set includes a single dumbbell with a weight range of 2.5-40lb, adjustable in 2.5lb increments, allowing for customized workouts. The black steel dumbbell features a plastic handle for easy gripping and is suitable for building muscle in the arms through weight lifting exercises. With a maximum load of 1000 lb, this adjustable dumbbell set is a practical and effective option for fitness enthusiasts looking to increase their strength and muscle mass at home.