With the Makita 421093-8 cork plate, you restore flat and consistent sanding performance to your belt sander. This rectangular pad mounts directly beneath the sanding belt on Makita models 9401, 9402, 9403, and 9403J to replace a worn base layer. The resilient cork structure effectively absorbs operating vibrations and distributes contact pressure evenly across the entire surface. This gives you steady control and ensures a smooth, uniform finish across large wooden surfaces.