This is an original Delta replacement part. The washer is designed by the manufacturer for use in power tools such as table saws, miter saws, and routers. This part is made of metal, and may be found in various locations in the machine, depending on model. Please be aware that there are different washers used in the machine. Refer to t...Read morehe parts diagram to be sure of ordering the correct part. You may require a screwdriver when replacing this item. This part is sold individually. Included in part number 395930-01