The Alemite 6304-B is a hydraulic grease coupler with a metal seal and 1/8-inch NPTF female-to-female threads. The metal seal supports higher pressure ratings than rubber-seal couplers during...
Hydraulic coupler from Lincoln Industrial in 1/8 inch female NPT thread for grease gun hose ends. Snaps onto standard grease zerks for chassis and bearing lubrication.