100mm Machine Solid Nylon Wheel fitted into an extra sturdy Fabricated Top Plate Swivel Castor using a double thrust bearing in the swivel head to optimise the load capability. The repairing bolt spacings are the ecu Standard measurement of 80x60mm. The load potential of this castor is 900kg at 4km/hThis http://messiahhigeb.blogolize.com/Helping-The-others-Realize-The-Advantages-Of-polyurethane-castors-51084514