This is a New Hydraulic Flow Rater Tool . It will test flow up to 30gpm and pressure up to 4000psi .Use this to check flow and pressure of pumps and relief valves , pinpoint hydraulic problems , replace only parts that are worn out rather than guessing. Fittings , hoses and adapters not included. Has standard 3/4" NTP female ports. Simple durable design. Liquid filled guage. Check out my store for other IH tractor parts. I have over 25 yrs. experience of rebuilding IH tractors and motors and have many parts available . Email your questions and I can probably help you.