Lot of 4- 4″ X 7/8″ Colson Phenolic Caster Wheels Heavy Duty Delrin Bearing Wheel Diameter 4” Tread Width 7/8” Bearing Bore 7/16” Load Capacity 135 lbs Spanner Bushing Bore 5/16” Spanner Bushing Length 1-7/64” Hub Length 1-1/32” Bearing Type Delrin See photos for additional description and condition