Restore the smooth, flat sanding performance of your 9903 belt sander with the genuine Makita 423312-8 cork plate. Designed to fit the base of your machine, this rectangular cork pad acts as a resilient backing layer under the sanding belt. It distributes pressure evenly across the workpiece, absorbing surface irregularities to prevent gouges and ensure a clean, level finish on wood, timber, and panels. By reducing friction and protecting the metal plate from wear and heat, it helps you achieve consistent results with complete control.