RWM Casters SWR-0820-08 8" Diameter x 2" Width Nylon Core/Elastomeric Rubber Tread Signature Premium Wheel with Straight Roller Bearing, 700 lbs Capacity 1/2" Axle diameter, 2-7/16" hub length, 700lbs capacity^Signature premium wheel with straight roller bearing^8" Wheel diameter and 2" wheel width