Detailed Product Description CNG pressure gauge ,install on to Gas ... /5800 psiCover material: ABS, Stainless steel 1. 50mm CNG gauge, bottom connection, 1/4BSP, black steel case, snap-on ... 400bar/psi, accuracy 2.5%2. 50mm CNG gauge, back connection, 1/4BSP, black steel case, snap-on polycarbonate ... 400bar/psi, accuracy 2.5%3. 50mm CNG gauge, bottom connection, 1/4BSP, polished 304 SS case and crimped ...