Performance Tool W54228 Lock-On Grease Gun Coupler Tool for Vehicle Maintenance in Garages and Workshops

This worked ok for zerk fitting that were easy to get to, and once lock on it was a one had operation, but tension on unlock collar is very stiff and with greasy hands or gloves you have to work to get it off. The down fall and why I wish I didn't buy it is that is you have a zerk fitting that is under pressure it is imposible to get off by hand, you need pliers or a self locking pliers to remove. It doesn't save time and harder to use than the standard grease fitting. A great idea, but it doesn't work

The size seemed to good to be true, and it was... it didn't do a good job of retaining hold to zirc fittings, which makes the benefit of the size and fitting into tight places pretty useless. I still ended up having to hold it in place, getting grease everywhere... Again! It seemed to pick up a little trash quickly, contributing to the issues I had.

wont work unless you can get straight on the zerk. requires a lot of force to get locked on, tool doesn't help anything, a good working regular coupler works better

I would not buy this product for equipment. Maybe in a perfect world but with dirt and old grease on tractors this requires two hands on some fittings.

Don’t but don’t fit most zerks and leaks more out then it puts in