The Steelman 2402 5 in. High Speed Disc Sander 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 18,000 RPM, this pneumatic tool can use sanding discs 3 in. Dia to 5.5 in. Dia to help you get the job done right and done fast. The built-in regulator allows for consistent performance and helps even out pressure from pneumatic systems prone to sudden spikes. Energy efficient, the 0.5HP air powered motor consumes a mere 4 CFM of 90 psi compressed air. Air inlet is threaded to accept conventional 1/4 in. NPT fittings and quick connects for use with a 3/8 in. air hose. Tool is lightweight for added user comfort, weighing only 2.5 lbs. and measuring 7.5 in. in overall length.