This high quality washer is used in various Rhino-Rack products. It is ideal for use as a spare or replacement. This flat washer from Rhino-Rack is an essential component of any roof rack. Featuring a durable zinc coating, the product is ideal for use as a spare or replacement within Rhino-Rack roof racks. If you need to replace any of the parts in your Rhino-Rack, ensure you have everything you need with a spare flat washer.