100mm Machine Solid Nylon Wheel equipped into an additional robust Fabricated Major Plate Swivel Castor having a double thrust bearing from the swivel head to optimise the load ability. The correcting bolt spacings are the European Typical size of 80x60mm. The load ability of the castor is 900kg at 4km/hThis https://heavy-duty-castors42963.blogs-service.com/43043331/top-polyurethane-castors-secrets