Tracking didn't show but it did show up in satisfactory time. It would not fit my variety of grinders here in America. They have a 5/8 spindle and varying head designs. I was able to make it work with a large nut that fit the 5/8 spindle. I thought I would have to grind off all the corners on the nut but one but I tried it first. Glad I did. Worked great.