NÜOBELL 550 BlackBefore anyone else built an adjustable dumbbell with a twist handle, there was the NOBELL 550. Engineered to deliver 5 to 50 lbs of on demand resistance in 5 lb increments, this compact adjustable dumbbell set replaces an entire rack of fixed weights without sacrificing the traditional feel serious lifters demand. Patented twist handle mechanismInstant weight selection from 5 to 50 lbs with a simple turn, enabling zero friction supersets and efficient