Make replacing or connecting the hydraulic couplings on your tractor simpler and faster with our Pressure Relief Tool. This tool enables quick easy connection of couplers under pressure. The set includes both male and female coupling tools that ONLY fit 1/2" ISO 7241-B quick release hydraulic couplings. It's designed for modern day compact tractors (Kubota, John Deere etc) equipped with 1/2" ISO 7241-B couplings. The pressure relief tool can save you time, money, and frustration when connecting tractor implements. Keep this compact tool in your tractor tool box and get ready to enjoy a hassle-free connection every time! **PLEASE DOUBLE CHECK YOUR COUPLING SIZE WITH SIZE CHART IN PRODUCT PICS BEFORE ORDERING** Will only fit 1/2" IS0 7241-B fittings and no other size.