- 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.

This grease coupler works extremely well. It provides a very secure, tight hold on grease zerk fittings, which allows for better grease transfer and significantly less mess compared to standard couplers. The spring in the coupler feels strong and well-built, giving you confidence that it won’t pop off under pressure. It is slightly longer and a bit bulkier than the original couplers that come on most grease guns (both electric and manual), but that actually works in its favor. In tight spots where you can’t wiggle or twist the coupler to disconnect it, this one saves a lot of frustration. No more yanking on the hose or fighting to get it off the fitting. When I bought this coupler, I also picked up the LockNLube 8-Piece Quick Connect Greasing Accessory Kit, knowing clearance might be an issue in some areas—and I don’t regret that decision at all. The combination works great and makes greasing much easier overall. I’m very satisfied with this purchase and would absolutely recommend this grease coupler to anyone who does regular maintenance and wants a cleaner, easier experience.

Works great... Way better than the original grease coupler... i should have bought one sooner. would have saved me some headache.... i definitely recommend you buy one.... it locks on well. and easy to use.. no leaks. and fits well

The coupler fit on my existing grease gun and worked as advertised. Great product! Bo more struggling to get it on and off grease fittings.

Hi. I have a 4th Generation Toyota 4Runner 4WD that has 6 grease fittings on the propeller front and rear (drive) shafts. Some are easy to access as the front shafts can be manually turned when vehicle is parked, as long as the 4WD is disengaged. A few in the rear drive shaft can be tricky to access based on the rotation of the drive shaft. It might be necessary to move the vehicle slightly forward or back a few feet to position the fittings for easy access. Using the Lock N Lube on a high quality grease gun with flexible hose, made an otherwise annoying problem, easy to manage. I had a good quality grease coupler already and know the trick to making it release from the fitting more easily is to unscrew the end of the coupler to release the pressure. The problem, is that typically, this can be difficult to do when access to the end of coupler is limited once it is attached to the fitting, and it is guaranteed to be slippery from grease. The Lock N Lube was easily connected/disconnected using the lever with no effort. Once attached, there was no leaking from the attachment point, and I could easily hear the old grease being pushed out around the u-joints. Once done, a quick push on the lever released the coupler from the fitting and I was on to the next one. $30 is a bit steep for this product, but it works and was engineered so well, it was worth every penny in minimizing frustration. Awesome product in my application......no one wants any extra challenge when lying on the concrete working under the truck, and this thing works like a champ!

Works great and locks on zerk fittings great, however, there are a couple of zirks that are reset in a hole that this cannot reach due to diameter of housing too large to lock on to.

Excellent product. I have a few grease fittings on my boat that are very difficult to see and even harder to reach. A regular grease coupling kept coming off making lubrication impossible. With the LockNLube Grease Coupling I can reach into the small space and lock it on. It stays connected with no grease leaking out. I will not need another grease coupling ever again. Quality product worth the price.

Using on a Milwaukee M18 grease gun. Works as claimed. Larger diameter tip makes some zerks more difficult to grease due to limited space. However, one handed operation is very nice and worth it.

These are amazing. I fought my old tips for years. These work great and already purchased another one for a family member

非常に良い製品です。

सुपर गुड

As described.

Exactly as described. Very good product

Great end, no spillage and gets a fine hold of the nipple, expensive but well worth the money.