Check the listing for details. Midmark P21 Dental Air Compressor Head 115 Volt NEW Replacement Head 3/4HP Pump. Condition: New. Listed at 1435.99 USD. 3/4hp Replacement Compressor Features and Benefits:115 Volt 26 lbs 3/4HP Gast Compressor Head Replacement. ** Please verify Voltage before ordering. Quieter operation than similar compressors so that you can get maximum performance without distracting or annoying noise.Oil-less operation so that you have no worries about pollution of any kind.Includes Smart-Start technology to start under load to make life easier for you.Superior quality, flexible cup material for increased reliability.Permanently lubricated bearings give you great performance with no increased maintenance. Diecast body components for overall strengthDouble-cylinder design1-year warranty3/4 hp Compressor purchase includes:Air inlet filterMost systems use 1-5 compressor heads. This is for just one replacement compressor. Does not come with any other outlets, fittings, parts, or pieces. If you have a seized pump or one that cannot be rebuilt - this will replace it. Easy to install by connecting your existing power supply to the power leads on the compressor. Power on to determine your exhaust and intake ports. (feel for suction or pressure).Connect your plumbing accordingly. Does NOT come with any other parts, pieces, fittings, etc.These will come with the gast brand air filter. Does NOT come with the Aftermarket filters used with varying dental head units.