Master Mfg. Co Gemini Heavy-Duty Chair Mat Casters - 3in Dia., 7/16in Dia. x 7/8in Long Noiseless Stem, 220 lbs./Caster, 5/Set

Eliminates hazards such as sliding, skating and run-away chairs. Grey and Black Finish. 5/Set. 7/16in dia. x 7/8in long stem fastener with dual grip ring technology eliminates excessive noise. 3in diameter heavy-duty twin wheel casters. Prevents damage to chair mats and other hard floor surfaces. Weight Rating: 220 lbs/Caster. Built strong, perfect for hospitals, fits most medical applications.