Most fitness experts agree that a good set of dumbbells is all you need for a total muscle-building, fat-burning workout. High-quality adjustable Dosho Bells are equivalent to nine dumbbells! The patented Clam-Shell System makes adding and decreasing weight in 5 lb. increments as simple as a flick of a finger. Adjust weight quickly from 5 lbs. to 45 lbs. for a smooth, time-efficient workout. The plates you don't need stay in the storage case as you lift up the dumbbell. High-grade rubber hand grips provide a non-slip, controlled grip. Pair with the Dosho Bench for a complete home gym! Manufacturer Lifetime Warranty.