Function: 1. Hydraulic gauge is used to indicate the engine hydraulic to ensure the lubrication system is functioning properly. 2. Universal 52mm/2" oil pressure meter with high precision sensor provides accurate measurement results. 3.0‑7kg/cm² measurement range, white LED light, easy to read in dark environment 4.5.Made of high quality plastic and aluminum alloy, strong and wear-resistant, durable. 5. Compact design, lightweight and small size, can be freely installed anywhere without taking up much space. Specifications: Package List: 1 x Hydraulic Gauge 1 x Hydraulic Sensor 1 x Fixed Bracket 3 x Iron Ring 3 x Gasket 3 x Nut 1 x Manual