Up to 300 Bar / 4,500 PSI
(ps: When you are filling the cylinder it is best not to exceed 200 Bar/3000Psi)
S300/S300Plus/S500: M10 x 1MM S400/S400Plus/S400Pro/S700: 7/16″ connect to first stage port
Small and compact,Visual low air indicator Attaches directly to your regulator 1st stage