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

the first set of jaws are awesome i cant seem to get much life out of the second set that comes with them. this is my fourth one

I first purchased a similar item from my local orange auto parts store for a couple bucks less than this, and it was returned as soon as I opened it. That thing was horrible! This, however, is night and day better. Very easy to use and makes greasing much less of a pain.

Locks on the zerk fitting very well

Its been a great product so far. It keeps the grease where you want it and even helps a little with some zerks that dont take grease so easy.

Its like having an extra hand. Clip on and pull the trigger.

Works pretty well most the time

Nice grease gun loads easily coupling works well buy one

I got tired of grease fittings slipping off so i bought this in hopes of solving the issue. It does lock onto the fitting but does not create a good seal. Once I started pumping, grease would start leaking out.

Good product!

Good Product but expensive. Look elsewhere for alternatives