Mounting options include top plate, bolt hole, expanding stem and standard and metric threaded stem sizes.
The non-marking, non-marring polyurethane wheels perform especially well on hard surfaces such as concrete, tile, and wood. Listing is for one (1) Service Caster Series #20 stainless steel swivel caster with a 5" diameter by 1-1/4" wide gray polyurethane wheel and a 1/2"-13 X 1-1/2" threaded stem with total lock brake capable of supporting 300 lbs. Built with 316 stainless steel, which contains additional molybdenum and nickel content, making it more corrosion resistant than standard 304 stainless steel.