With the Festool SU/KM-BS 105 sanding base, you restore flat, dependable guidance to your bs 105 belt sander for demanding sanding tasks. Built from a durable combination of cork and metal, this backing pad provides firm and stable support underneath the sanding belt. It prevents grooves and uneven surfaces while ensuring consistent pressure distribution during heavy stock removal. Whether you are prepping rough timber, leveling uneven boards, or sanding down large wooden structures, this sanding base lets you remove material quickly while keeping full control over a smooth, uniform finish.