The LockNLube® grease gun coupler is a robust long-lived lubrication tool with low lifetime costs. It is not a disposable throwaway.
The LockNLube grease coupler has a unique sliding sleeve, activated by a thumb lever. The sleeve locks the four spring-steel jaws onto the Zerk fitting, and releases the jaws by pushing on the thumb lever. Because it does not leak, the grease goes in, not on the machine and the bearings get the grease they so desperately need.
When the jaws are locked onto the Zerk a leak-proof seal is created. No hands are needed to align or hold the coupler in place while greasing. The locked connection is positive and rigid preventing the coupler from coming loose and breaking the leak-proof seal. If a fitting becomes pressurized, especially a recessed one, just depress the thumb lever and release the coupler.
With replaceable seal and jaws, the LockNLube grease coupler achieves multi-year service life. A spare Seal Kit (extra seal + 4 hardened steel jaws) is included with each coupler. Additional Seal Kits are also available.
The LockNLube coupler is a great improvement over standard grease couplers and grease tips. It makes greasing easier, more satisfying and less frustrating.