Powerful energy efficient air motor resists stalls. Triple idler planetary gearing for smooth operation and extended tool life. Handle exhaust reduces noise and directs air away from work area. Ideal for accessory and air conditioner installation, engine work and auto body repair Chuck size: 3/8"; spindle size: 3/8"-24"; free speed: 2400 RPM; average air consumption: 4.13 cfm; air inlet thread: 1/4" NPTF; minimum hose size: 3/8"; sound dBA: 92; length: 7"; weight: 2.25 lb.