Grease Gun Coupler, Quick Lock Double Handles Grease Gun Tip with 6 Thickened Claws, Rated 12,000 PSI, Compatible with All Grease Guns, Suitable for Automobiles Ships Farm Machinery, Etc

It's a tad bulkier than some $20+ ones but is a great value. Pro tip: you can easily swap out straight zerk nipples that might be hard to access for 90° or 45° zerks, available at Harbor Freight in bulk for only $7. Just need a small (#8) wrench. Easy. I did that for four of mine and now all 14 pts can be quickly greased using this great device. :)

Not only did it snap on, and stay on while I was swinging from my radio tower as I pumped the thrust bearing full of grease, it also made a handy dandy grease fitting nipple wrench to start the threading, so it didn’t fall out until I could put a wrench on it, but when I needed to remove it, it was easy peasy, even with my sorry soar hands !

Good value,works great

Works good, tight fit, easy release, the only problem is because of the size, it won't fit in tight spots.

It locks in nice and tight.

Very pleased as it does clamp on the zerk as expected.

Holds on zert very tight if I need a nother one I will reorder

works find for grease fittings that are in the open. Hard to reach or tight spaces not so good.