Versatile, Spry Nesting Training Table Base adjusts to fit tabletops from 48" to 72" wide & from 24" to 30" deep so you can set up the configuration you need. It rolls on 2.5" polyurethane casters with brakes for easy setup. Once assembled, it nests with a cable-controlled folding mechanism for compact storage. The width-adjustable beam is made of 50mm x 25mm x 1.5mm cold-rolled steel for dependable use. Brackets & legs are made of aluminum alloy pipe while the joint & foot base are made of 4mm thick, die-cast magnesium. Modesty panel & tabletops are not included. Assembled table meets BIFMA standards.