Shepherd 8 In. Pneumatic Heavy-Duty Swivel Plate Caster

8 inch diameter black rubber air-filled wheel on steel hub with ball bearing swivel and plate mount 4 inch x 4-1/2 inch plate 220-lb load capacity Air-filled pneumatic tires roll smoothly over flat or bumpy terrain Material Pneumatic Color Black Size 8 In. Type Heavy-Duty SwivelYou may also like Shepherd Hardware 9794 8 in. Caster Swivel Plate Pneumatic Wheel.