This premium air pressure wax injector operates with compressed air. Designed and engineered with high quality standards and specifications. The wax pot is made of 1/2" high grade aluminum extrusion, CNC machined to a clean smooth surface (not cast aluminum). An electronic temperature thermostat maintains the set temperature constant within a + 1F. This controls the erratic temperature swings of 15-25 found on many other wax injectors. Has a built-in dial thermometer threaded into the pot at the wax nozzle level for a truer reading of the wax being injected. The nozzle is a precision built (CNC machined) drip proof nozzle to ensure smooth repetitive action. The cover of the pot has 3 locking knobs to secure and ensure a tight seal, with even and equal pressure distribution and a pressure regulator with a (0-15 PSI) gauge. A wax nozzle test handle is included. Made in USA.