LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool.

Key features

• LOCKS ON, DOES NOT LEAK: Grease goes in, not on the machine. LockNLube’s unique sliding sleeve ensures that when the jaws are locked onto the Zerk, a leak-proof seal is created.
• ONLY REBUILDABLE COUPLER: All LockNLube couplers include a rebuild kit! Simply replace the seal and jaws and it is as good as new = lowest lifetime cost.
• COMPATIBLE WITH ALL GREASE GUNS AND ZERK FITTINGS: 1/8" NPT works with all grease guns and manufacturers – pneumatic, manual, or electric. Locks on to all Metric and SAE specification Zerks.
• BEST BUILT GUARANTEE: If our products don’t work better and last longer than anything out there, we’ll make it right. If you aren’t satisfied with anything you buy from LockNLube, send it back within a year for a full refund - no strings attached.
• HANDS FREE, LEAK FREE GREASING: The LockNLube Grease Coupler is rated to 10,000 PSI (690 Bar) and will not release under pressure. No hands are needed to align the coupler or keep it attached. End greasing frustration.