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.

Good for most fittings.

Worked perfect for a stubborn zerk on my 67 Coronet. Perfect for steering linkage fittings.

On the expensive side but it works exactly as advertised. It makes the process of lubricating my mowers and tractor much easier, especially with those hard to reach zerk fittings.

This grease coupler works great for me. Locks right on and no more mess. In limited space you may need to change to angled zerks. Delivery was quick!

Works excellent! Very good product.

Been using it for a while on a wide variety of heavy equipment. There have been some grease points where this coupler wouldnt fit or the area was to confined to work the lever, but the other 99% of the time this is way easier and faster to use than a traditional coupler.

Maybe its me, but this is as great as I expected. It works, but dont see a lot of difference than the standard tip. Also it is a good bit longer, so if you have tight spots this might not fit. I have two placed on my tractor it will not fit, so I am going to have to figure someone out...either use two guns or have to change the tip each time I use it.

Very easy to use

We buy these all the time for our grease guns. We have a rock quarry with heavy equipment that needs greasing every night. They work well.

It works well but it’s big and gets in the way sometimes.