The Hoof Buffer-1 has been designed so that its sanding belt can flex slightly when applied to the edge of the hoof wall. This action allows you to create the smoothest surface possible when rounding the perimeter of the wall. The hard back of the handle can be used to apply more firm pressure when sanding cracks and chips in the wall surface. The HB-1 comes with a spare sanding belt included and a wrench for adjusting belt tension. The belt must loosened and rotated occasionally to make us of the entire belt and prevent wear where the handle edge apply pressure to it.