Review on LockNLube Recessed Fitting Adapter by Malik Berry

Since Zercs on my 3 U-Joints are straight there is no way to install a standard Zerc coupler between U-Joint grease fittings to fit them connect to Zerc. It's just too fat! This little "stab" is the perfect answer. I attached it directly to my grease gun with a 1/8" x 1/8" brass hex nipple (https://www.amazon.com/gp/product/B07CPZ9ZDC) to make it easier to get enough pressure on the Zerc to apply grease to the universal joints. Great product!