Extra-strong carts are made of 1-1/4" powder-coated steel tubing with added welding for lasting performance. Pressure sensitive hinge safely holds lid open at any angle, preventing smashed fingers. Integrated keyed-locking system eliminates the need for padlocks and ensures the teacher remains in control of the cart. Indoor cart has four 4" dia ball-bearing swivel casters (two locking). All-Terrain cart has two 4" dia ball-bearing swivel casters and two 12" dia all-terrain wheels. Choose Full-Size with single compartment (holds 24 official basketballs) or Max (holds 40 official basketballs) with double compartment divided by center interior divider. Assembly required. Truck delivery on Max carts.