... bar/5800 psiCover material: ABS, Stainless steel 1. 50mm CNG gauge, bottom connection, 1/4BSP, black steel case, snap-on polycarbonate ... scales 0-400bar/psi, accuracy 2.5%2. 50mm CNG gauge, back connection, 1/4BSP, black steel case, snap-on ... and crimped ring, polycarbonate plastic window, electronic borad inside the gauge, brass internals and connection, dual scales 0-400bar/psi, accuracy ...