Carburetor Pressure Gauge / Pack Size:1Foley/PLP 186-058, Rotary 8338, ESF 186-058, Foley/Belsaw 5978507, Laser L6005, Rotary 11321, JThomas JT-5020, Ratio Parts 099-027, NHC 288-5749, Rotary 9036, Sunbelt B1W5711 Detects leaks on rebuilt carburetor in seconds, Can be used to test 2-cycle carburetors by using the included adapter and Tygon, True Blue or other 2-cycle fuel line prior to attaching, Using thumb, pump up to estimated 5 PSI (outside numbers on gauge), Ethanol: Not compatible with greater than 10% ethanol fuel, Made By: An OEM supplier, Hook to 4-cycle carburetor fuel inlet (use included adapter and correct size fuel line not included for 2-cycle), Make sure pressure gauge holds at a constant PSI to show no leaking