Specifications: Oil pressure tester kit includes pressure gauge, hose and adapter. It is used to check whether the fuel pump and vacuum system parts are worn or defective. Suitable Models: The tester is suitable for most common vehicles. Please ask us before buying special models. Reading data: the tester can read the vacuum degree of 28''HG, and the output pressure can reach 10pasi, the double scale of large size with a diameter of 3.5 inches is easy to read. Parameters: The tester comes with a 90cm rubber hose and a 14mm / 18mm manifold adapter. Convenient to Carry: A rugged pressure gauge with a protective rubber case and blow molded case for easy transport and storage. Product Description AUTOOL Pump Fuel Pump and Vacuum Tester Carburetor Valve Pressure Tester Gauge Kit Car Truckwhich can test fuel pump pressure and all vacuum devices. It will also diagnose leaky valves, improper timing, leaky intake manifolds and clogged mufflers. Features: Housing Color: Red Material: Plastic and Metal Gauge Diameter: 3.5'' Case Size: Approx. 32.5 * 27 * 6cm / 12.7 * 10.6 * 2.4in Case weight: approx. 1070g / 2.4 lbs Package: 1x Vacuum Pressure Tester 1x 90cm Vacuum Hose 4x rubber adapter 3x metal adapter 1x suitcase If the gauge does not read zero, please try the steps below: 1. Remove the rubber damper cover. 2. Rotate and remove the transparent frame. 3. Adjust to zero with the calibration screw. 4. Display of the zeroed gauge.