The tool (or rather attachment?) is called Lock and Lube. I asked Santa for this for Christmas as a few of the Youtube channels I subscribe to have had them and they looked like a great addition to the shop. I don't know about you guys but I have a few zerks around that don't like to take grease (heim joints on the snow pusher being I think the worst). As simple as greasing is, I'd put the grease gun to the zerk and if I didn't hold the hose/fitting just right while pumping the gun very hard, grease would come out before it even got into the zerk. A royal PITA.
Enter Lock and Lube. It basically (duh) locks onto the grease fitting and then you let go. It's rated for up to 10,000PSI and even comes with a seal rebuild kit when the time comes. I of course immediately tried it out. It. Is. Awesome.
If you do any kind of regular greasing on equipment (which we all do, right!
) for as simple as it is, I'd recommend one 100%. And if you have any hidden fittings, they sell one with a longer barrel, as well.
Check it out, I've linked it below.
https://locknlube.com/collections/lo...grease-coupler
And a quick video review/overview of the product
https://www.youtube.com/watch?v=kmb4dhvmxzQ