BSP120 10PC Sanding Belt 120 Grit 3/8” x 13” Astro Pneumatic The BSP120 10PC Sanding Belt 120 Grit 3/8” x 13” Astro Pneumatic includes 10 high quality belts for any sanding job. Astro Pneumatic provides the essentials needed to keep the shop running smooth and organized providing the highest quality in the industry to assure you get the job done right.