Shopsmith 12155 120 Grit Ceramic Sanding Belts (1 Pack), 4" x 36" For use on bench top sanders The bi-directional flush joint allows the sanding belt to run smoothly in both directions The resin bonding system resists heat and humidity, extending the life of the sanding belt Made with extreme duty poly-cotton backing which resists tearing and wear, increasing the life of the sanding belt Best for light stock removal and bare wood sanding