This is an original replacement part sourced directly from the manufacturer. The screw is commonly found in power tools from Ridgid and Ryobi, such as cement saws, impact drivers, and routers. This part is made of metal, and is generally used to secure the gear case. Please be aware that there are different screws used in the machine. ...Read more Refer to the parts diagram to be sure of ordering the correct part. You will require a screwdriver when replacing this item. The screw is sold as an individual replacement part.