The STEELMAN 7 inch Angle Polisher has a powerful 1 HP motor to handle those tough jobs that require some serious power. The handle can be mounted on either side, so regardless if you're a Lefty or Righty this Polisher will conform to you. This tool has hardened and ground spiral bevel gears for low vibration and longevity. It's truly a must have if you are looking for an Angle Polisher that will last. The Specs are as follows: 2,500 RPM, 7 inch wheel size, 5/8 inch-11 spindle thread, 1/4 inch NPT air inlet thread, 3/8 inch ID air hose. 90 PSI, 4.2 CFM, overall length is 16 inch and it weighs 5.2lbs.