The NATIONAL-DETROIT INC F8 12128 Long Board Straight Line Sander is a high-quality and reliable automotive tool designed for sanding tasks. With a disc size of 4 inches, this single item sander is perfect for achieving smooth and consistent results. The manufacturer part number F8-12128 ensures that you are getting a genuine product from this reputable brand. Whether you are a professional mechanic or a DIY enthusiast, this straight line sander is a valuable addition to your workshop.