Description [Connection] CGA-580 inlet fitting fits standard nitrogen, helium, and inert gas tanks from all suppliers. 1/4-inch male flare fitting fits HVAC charging hoses for purging, pressure testing, and high-pressure lines. [Accurate Pressure Gauge] The nitrogen gas regulator features two easy-to-read pressure gauges, covered with scratch-resistant plastic protective film and rubber cover. Input: 0-4000PSI. Output: adjustable 0-600PSI. The display shows 800PSI, which you can consider as 600PSI, but they can go up to 800PSI. [MATERIAL] It is made of solid brass material, which is sturdy and durable. It comes with a valve. This way, it can automatically release a certain pressure and avoid damage due to high pressure. [USER-FRIENDLY DESIGN] This nitrogen regulator has an exquisite exterior appearance with better gas tightness. The reading is displayed more accurately. Furthermore, it does not cause problems such as air leakage or general inaccuracy in the reading. [LARGE T-HANDLE] The nitrogen pressure gauge is equipped with a large T-handle that is very easy to adjust and stabilize. It is excellent for HVAC purging, inerting, pressure testing, soldering, leak testing, and brazing. Note: Due to different production batches, the appearance and color of the product may vary slightly, which does not affect use. Color: Gold Yellow Black Material: Plastic + Copper + Rubber Package Contents: 1 * Nitrogen Regulator 1 * Hose Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm.