Viair 450H Hardmount Compressor is intended to directly fill tires or other items using a coil hose. Comes with a built-in, moisture resistant on/off power switch. Include a heavy duty stainless steel leader hose with a ¼ inch quick connect stud for hookup to a coil hose and insulated wiring for simple installation. Contains 100 percent duty cycle, sealed, 150 PSI maximum working pressure.