The 450H is a continuous duty, hardmount compressor intended to directly fill tires or other items using a coil hose (not included). The 450H comes with a built-in, moisture resistant ON/OFF switch. Features include a heavy duty stainless steel braided leader hose with a ¼” quick connect stud for hookup to a tank, onboard air system or coil hose and insulated wiring for simple installation.