Astro  3037 1/2-Inch x 18-Inch Air Belt Sander with Belts Great for Spot Weld Removal Simple belt tension lever Variable speed control and increased pulley space for new thicker belts Industry leading 0.5HP Includes: 303740 -Sanding Belt 40 Grit - 1/2" x 18" 303760 - Sanding Belt 60 Grit - 1/2" x 18" 303780 - Sanding Belt 80 Grit - 1/2" x 18"