Prolube 43562 360 Degree Hydraulic Coupler, 7000 PSI, 1/8" NPT

An excellent coupler for effective lubrication of difficult & hard to reach grease fittings. jaws are fully hardened for extended service life. hardened coupler body & swivel joints withstand high-pressure applications without deformation. zinc plated finish; spring loaded ball check valve helps retain pressure. 3 jaw construction with ball check.