Escape Fitness 5-50lb Nucleus Urethane Dumbbell Set with XRACK 2.05 50lb DUMBBELL SET WITH XRACK 2. 0 5 50lb Nucleus Urethane Dumbell Set (2. 5lb increments), 10 pairs total with XRACK 2. 0 Introducing the XRACK 2. 0, a vertical storage rack designed to hold ten pairs of dumbbells. Its the most efficient way to keep your entire set up off the floor and organized. Updated with a striking look and improved space efficiency, the XRACK adds angular style and practicality to any facility. This rack includes 10 pairs of