Castor pack with all fixings to be used with Model No's AP8130, AP8150 & AP8250 toolboxes to make a versatile mobile toolbox combo. Features clip-on tray with four heavy-duty castors, two lockable, with smooth action nylon wheels, allowing for easy movement. With the flexibility to detach the castors from the toolbox system when required. (Requires some self assembly). Model No. AP8CB