High pressure resistant - can withstand working pressure up to 20-30 Mpa / 200-300 Bar / 3000-4500 PSI and equipped with pressure gauge indication. Dual Gauge Design - One gauge indicates tank pressure and the other gauge indicates pipeline pressure. Comes with 24-inch stainless steel spring protected hose. EASY INSTALLATION AND QUICK RELEASE - It comes with an 8mm female quick release coupling plug that can be connected and released with other male connectors in seconds. Strong compatibility - mainly used for high-pressure cylinders, SCBA cylinders, SCUBA diving cylinders or PCP cylinders, easy to assemble and install, for air/carbon dioxide filling. Tube length: 24inch Tube outer diameter: 6mm Pipe pressure: :1600bar :630bar Table type: double scale white background silver case black and blue scale table Gauge pressure: 6000psi Thread: 5/8-18UNF Colour:Black Material:Metal Package Contents: 1 x Air Tank Charging Valve 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.