Used for Kyoritsu's grass cutter. I removed the bolt and injected grease, but I greased up with grease gun. Grease up is painful as well! There are models that do not match with other manufacturers, so be careful.
I was troubled with a tap of a size not available in nearby mass merchandisers, but I could find it with monotaro and I did not have to purchase a machine shop high. However, because the tap was too long and the grease did not go in, we put two washers of stain and solved it. (It was a mistake when the spring and the ball jumped out when I tried to scrape the tap part at the beginning with the grinder and make a mistake.) Now it is perfect.