If you are looking for parts for your Bridgeport Series 6F or 8F Power Feed Unit you can purchase them directly from our web site. Whether you need parts for the 6F-A Power Feed Electronics , 6F-B&C Power Feed Electronics , 6F Power Feed Mechanical, 8F Power Feed Electronicsor the 8F Power Feed Mechanical we can provide them for you. Most orders are shipped out within 24 hours of receipt. You can find the serial number of the power feed on the table side of the unit under the output shaft. If you have any questions please call us at 1-800-285-5271 prior to ordering.