Heavy lubrication hook, easy to release. Ergonomic design that facilitates use: allows for easy connection and disconnection, saving labor. Recommended for use with JBM lubrication guns ref. 50751 and 50852, although it is suitable for use with most lubrication guns. The built-in valve control allows for easy lubrication of the unit at pressures up to 15,000 PSI (1,034 bar). Integrated 1/8 NPT connection. 3 hardened jaws resistant to high pressures without deformation.