Stucchi 10,000 PSI Hydraulic Jack Quick Coupling, 3/8 Inch Male NPT thread x 3/8 Inch Female Coupler Stucchi ivhp coupler have a higher burst pressure than competitors for greater safety. features: threaded sleeve for connection/disconnection fabricated with hardened steel and nitrile seals interchanges with enerpac and parker hydraulic jack hose couplers.