Easy-to-adjust qwikSLOT shelves can be removed without dismantling the entire unit. METRO 1200-Lb. Capacity qwikSLOT Security Truck is mounted to an aluminum dolly for extra support and rigidity. Patented quarter-turn padlock hasp that deters tampering. Open-wire construction makes it easy to monitor inventory. Ships unassembled. 5" polyurethane casters.