The DY85 Chair Dolly, an 11gauge steel unit, loads at an angle to securely and impressively hold up to 40 of the NPS 8500 Series stack chairs for easy transport and storage.Features black powdercoated paint finish that will not chip and 4" polyurathane casters (two that swivel) for easy mobility over nearly any surface.Each caster boasts a 165 lb.weight capacity for a total of 660 lbs.