Our 100mm Rebound Rubber Wheel Richmond Castor - S4456B is in Richmond's comprehensive range of heavy duty castors. The wheel runs on Ball Bearings and the wheels diameter is 100mm (4"). This heavy industrial castor has a load capacity of 150kg. This frame allows the castor to swivel 360°. Rebound rubber wheels are non marking however they have a higher rolling resistance than some other wheel types. The S4456B is fitted with a brake.