Here is good one to go along with the oinion sets. I went into the Fastenel store today. I asked the clerk if they had any grease zerks. He replied I do not know, is that a brand of grease. I then tried to explain that he might refer to them as a grease fitting. His reply what do they do . I explained they will go into holes in a fitting to be able to grease the shaft. He said how do you get grease in them. I said with a gun. He just stood there with a puzzled look on his face.