Review on 🔧 Pack of 2 CURT 22198 1.98-Inch Trailer Wheel Bearing Protectors and Dust Covers for Enhanced SEO by Justin Puranik

They work just like expensive wheel bearing lubricators. They're not easy to install if you're not careful. They required a little more effort to put them on. Once turned on, they go nowhere. Be sure to check out YouTube and see how you should lube them before you just start pumping lube in them. You have to keep an eye on the rubber diaphragm and spin the wheel while the lube is pumped all the way through. Once the diaphragm begins to retract, stop pumping lubricant!