MTB Series Mobile Bench Table features convenient, flexible, built-in seating. Specially designed torsion bars make tables easy to fold an unfold quickly and smoothly. Up-lock and down-lock mechanisms with heavy-duty wheels allow simple setup and teardown. Tubular steel frame provides long-lasting durability. The 3/4" thick particleboard core with high-pressure laminate is surrounded by T-mold edgebanding to enhance longevity. Table is perfect for sixth-grade and up. The 3-1/2" swivel casters include ball-bearing raceways for easy mobility. Three support bars per bench provide extra strength and durability.