The STEELMAN 1620 is an ideal tool for auto repair work, weld prep and cleanup, sharp edge grinding and removal, and more. With a maximum free run speed of 16,000 RPM this pneumatic tool uses a 3/4-inch x 20.5-inch (20mm x 520mm) 120 grit belt to will help you get the job done right and done fast. With a 360-degree rotatable head and narrow sanding profile you can easily work in areas other pneumatic sanders can't access. The built-in regulator allows for constistant performance and the tool operates on 18.4 cubic feet per minute of 90 PSI compressed air. Exhaust is redirected back out through the handle away from your work area. Threaded to accept a conventional 1/4-inch NPT air inlet to connect it to a 3/8-inch air hose this tool is 18.5-inches long overall and weighs 3.65 lb. Includes one 120 grit sanding belt.