Ultra-accurate pressure gauge display. Standard interface nut, super sealing effect. High quality trim valve for easy removal and cleaning. The aquarium CO2 regulator will always inject the right amount of CO2 at the right time to keep your plants growing. High quality alloy material and has a longer service life. Robust and compact construction. The large display allows easy reading of your settings to ensure they are always where you want them. Regulator Perfect CO2 to create the best growing conditions for your aquarium plants. Inlet link: side G5/8 threaded button Outlet flow: 2 .5 mL/min Vent Link: M101 Inlet Pressure: 0-2000psi Vent Size: packing: 17cm10cm*4.5cm Fine adjustment metal knob, sturdy and convenient The valve adjustment needle is made of stainless steel, very corrosion resistant and durable. The air can reach a bubble for 15 seconds, and the adjustment is sensitive and precise. High quality seals, using high quality natural rubber quality, improve the sealing of