6000psi Tank Valve with Dual High Pressure Gauge, one gauge shows the pressure inside the tank.Constant air valve/air fill station.M18x1.5 male Inlet thread50cm high pressure charging hoseHow it works?:Turn off the ON/OFFTurn the release valve clockwise to the lowest point,Install it into your bottle,then you can connect the 8mm quick plug to your other equipment,Turn on the ON/OFF to use it.When you stop using it, turn off the ON/OFF first and turn on the release valve counterclockwise to deflate.After the deflation is complete, you can remove your device.Pipe pressure: : 1600bar/WP: 630barColour: BlackMaterial: Stainless Steel+CopperPackage Contents:1 * AdapterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.