Comes with safety burst valve Fit for high pressure cylinder Carbon Fiber Tank with *1.5 thread Thread of the gauge is 7/16inch-20UNF, the same as the mini scuba pressure gauge. If you want to replace it, need to install it in the tank and use a 24mm socket wrench, that be much easier. Thread of the hose and way valve is M10x1 Tank Valve with Dual High Pressure Gauge, one gauge shows the pressure inside the tank Constant air valve/air fill station with black color M18x1.5 male Inlet thread 50cm high pressure charging hose Tank ON/OFF valve 6000psi Black Bottom Silver Case Small Watch CO2 Refill Station Tube Type:24inch full spring tube Tube outer diameter:6mm Tube pressure::1600bar :630bar Colour:Black Material:Metal Size: Height:117mm Handle outer diameter:48mm Handle Height:33mm Package Contents: 1 * full spring double gauge 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.