The Flashpoint Caster Set for Light Stands are tough enough to handle the load of heavy stands and their payload while rolling freely for effortless placement and positioning. The polyurethane 3" wheels smooth the way over slippery floors or provide sure footing over rougher terrain. Without these nifty casters, the stands can be such a drag. Heavy-duty lever toe locks halt the casters from unwanted stand movement. An essential key insert is included for each wheel to slide into the corresponding wheel slot to stabilize the caster on the leg foot and control the unwanted revolving of the caster on the leg base. Compatible with most stands that use the Manfrotto 018 caster set.