Available in 8, 10, and 12 in. wheel diameters with respective load capacities of 6,725, 9,350, and 10,285 lb, T Series includes kingpinless, fabricated steel, twin-wheel casters designed for heavy-duty power towing up to 4 mph. Hand-operated wheel lock sets caster in parked position, and 4-station plunger directional lock converts swivel caster into fixed (rigid) caster for straight-line travel. Revvothane (Vulkollan®) polyurethane tire on cast-iron wheels offer extended service life.