Super Heavy Duty Caster 

Dual wheel casters offer high weight capacities withminimal overall heights, better load distribution, flooprotection and mobility than single wheel casters. This isa result of spreading the weight over a wider floor areawhile offering wheel differential action, resulting in lessfriction between the wheels and the floor, requiring lesseffort for the caster to swivel. Dual wheel casters areideal for tow lines, shock load applications and abusiveconditions, production line dollies trucks used in variouindustries