Hi, I have been trying to figure out what the outboard thread size is for a Jet 1442. I bought a Oneway Vacuum adapter with the thread size I thought it was but it was not. Jet was useless when I called them and Oneway is not exactly sure what size it is. They offered to ship what they think the correct one is with the option for me to return it if it does not work but I would like to try and get it right. Any help is appreciated.
Thanks