This black two-tier utility cart pairs a flat top surface with a deep bottom tray, so it doubles as a mobile workstation for laptops or bulky tools as well as a hauler for heavier loads. The top tray measures 31.3 x 17.7 inches and holds up to 200 pounds, while the roomier bottom tray adds 3 inches of depth and carries up to 400 pounds, for a combined capacity of 550 pounds. Nearly 19.3 inches of clearance between the shelves leaves room for taller bins or equipment. Side rails are punched with pegboard holes so you can hang hooks or rods for extra organization, and a cup holder and built-in compartments keep small tools within reach. Two swivel and two fixed casters, all 5 inches with PVC coating, roll quietly and protect floors, and two of them lock for stability. At 39.96 x 17.72 x 33.46 inches and 34.5 pounds, this black cart assembles quickly and suits warehouses, garages, classrooms, and offices.