DuraChoice 2" Oil Filled Pressure Gauge - OEM - 1/4" NPT - Lower Mount - 30 Psi 1/4" NPT lower mount connection 2" Dual Scale Dial PSI /BAR /kPa - Without Logo Stainless steel case, Copper alloy wetted parts, Glycerin Filled Broad applications - water, oil, gas and more 30 PSI