1/8 BSP,4 jaw grease gun coupler for professional use with hand-operated grease guns. Designed to help eliminate grease loss. Hardened coupler body withstands high pressure without deformation. Fully hardened spring steel jaws. Hexagonal nut for easy tightening and adjustment. • Max working pressure: 6000psi / 413 bar • Body diameter 15mm / 0.59”

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