Lang Tools TU-30A Compression Tester Set Tests compression on all domestic and foreign cars and light trucks with gasoline engines, including mini engines Includes: small engine tester, M14 flex. hose adapter (short thread), M14 flex. hose adapter (long thread), M18 flex. hose adapter (short thread), M18 solid reach adapter, M10 and M12 solid adapters, quick coupler for valve repairs, and repair parts kit 2-1/2" gauge has a dual scale dial with ranges from 0-300 PSI and 0-21 bar