Heavy-duty, 12 gauge construction. 1-3/4" thick butcher block top provides an impact resistant, nonconductive work surface. Butcher block resists damage from heavy blows, and provides an extremely durable, yet forgiving work surface. All models are fully assembled and ready for immediate use. Your choice of 4 swivel casters with wheel brakes or 2 swivel and 2 rigid caster with a floor lock. All models roll smoothly with 6" non-marking polyurethane wheels.