Swivel Stem Caster With Brake, 5 InchFeatures:Round-Post Caster – 5 Inch Polyurethane Swivel with BrakeEach Caster is Capable of Carrying Up To 300 lbsCan Be Attached to a Variety of Shelving Units to Make Them MobileDimensions: 5″ x 1-1/4″Stem Length: 2-1/2″ x 0.65″ DiameterUsed on Metro Style Wire Shelving CartsSold IndividuallyQuantum StorageWR-00H-B