Fit very good on my 1945 farmall b. Needed to remove the half moon Keyway and clean up the shafts a little bit as well as the half moon Keyway. Fit nice and snug. Just need to go to your local hardware store and get the set screws. The thread size is 3/16" -16 I believe. I used 3/8 inch long ones for the holes by the keyway and 1/2 long ones for the other two holes. Not to mention you'll save yourself about $100 by using this one versus ordering the Steiner assembly. Also note that I found out that you can not replace just the universal joint on the orginal joint assembly that came factory on the farmall b.