Master Mechanic, 3", Air Cut Off Tool, 18,000 RPM Variable Speed, Lightweight Aluminum Body, Long Neck With Chrome Plated Safety Guard, Safety Latch Protects Against Accidental Start Up, Screened Inlet Helps Prevent Dirt Particles From Entering Air Intake, Rear Exhaust Directs Air Away From Work Area, 4.5 CFM At 90 PSI Average Air Consumption, 1/4" Inlet.