Works great. You may have to wiggle back and forth, while doing that it will creep itself onto the fitting. I tried another Canadian made one that had a collar that you pulled back. I thought it would be better as it was smaller so you can get into tighter spots. But if the shoulder on the grease zerk wasn't absolutely perfectly clean, it would not grab on. The LockNLube grabbed onto every fitting and never slipped off unless I released it.