Feature:1. 52mm/2in automobile gauge, used to measure the oil pressure of car.2. Digital display with black dial and blue LED, also has red warning light.3. High accuracy, this gauge has a measuring range of 0150PSI, simple to operate.4. Comes with an oil pressure sensor, which features NPT 1/8in mounting thread.5. Premium plastic and aluminum alloy materials, rugged, anti-corrsion and durable.Specification:Item Type: Oil Pressure GaugeMaterial: Plastic + Aluminum AlloyDiameter Size: Approx. 2in (52mm)Input Voltage: DC 12VInput Current: 0.3A (Maximum)Unit: PSIMeasurement Range: 0-150PSIWarning Point: 10.5PSISensor Mounting Thread: NPT 1/ 8inColor: Blue Digital ReadoutHow to Install:1. Gauge may be mounted in 2in/52mm dia holes or in gauge custom mounted panels. Secure gauge with mounting clamps supplied.2. Drill 3/8" dia .holes and install rubber grommets where pressure or vacuum line passes through sheet mental such as firewall.3. Attach nylon pressure line to fitting on back of gauge using adaptor ,ferrule ,and compression nut .route line through grommets to engine compartment .connect line to pressure port on engine by using 1/8" adaptor ferrule and compression nut for turbo and prossure gauge or 1/8" adaptor and fitting for vacuum gauge.4. Start engine and thoroughly check installation for leaks.Twist in light socket assembly and connect one wire(yellow) to dash lighting circut or other 12v power source and the other wire(black) to a good ground..Package List:1 x Oil Pressure Gauge1 x Connection Line 1 x Oil Pressure Sensor 1 x Manual