A professional quality 7-inch air angle polisher by Neiko. This polisher will give you quiet, trouble free operation and a very long service life. Heavy duty aluminum construction, air inlet size: 1/4-inch. Recommend to use air hose with 3/8-inch. Spindle thread size: 5/8-inch, 11 thread. Pad size: 7-inch. Air consumption: 12 CFM, free speed: 2600 rpm. Sound level: 85 dBa, Comes with backing pad. Made in Taiwan