Aluminum body. Ideal for touch up sanding. Lightweight pistol grip design offers greater control and comfort. Built-in regulator for positive speed control. Direct drive motor with handle exhaust 1 year warranty on material and workmanship. Specifications: . Pad size: 5". Spindle thread size: 7/16" - 20. Free speed: 18,000 RPM. Air inlet thread size: 1/4" NPT. Air hose I.D. size: 3/8". Net weight: 2-1/2 lb.. Overall length: 5-3/4". Avg. air consumption: 4 cfm. Noise level: 95 dBA @ 90 PSI