Added length lets you store twice as many balls while separate compartments keep them organized. Designed for quick and easy unloading through the convenient Side-Empty™ doors, and rolls through any size doorway. The 1-1/4" dia powder-coated steel tubing holds up to years of use and abuse. Smooth-rolling 4" dia wheels with ball-bearing casters and 12" dia all-terrain wheels roll smoothly over any surface, indoors or out. Double-Decker has 4 separate compartments and holds 112 official basketballs. Single holds 56 official basketballs. Assembly required. Truck delivery.