I was looking for the Harbor Freight item #94393 as it was higher rated than the other one they sell which is item #61557 but couldn't find one.
I went to another Harbor Freight today and they also only had the #61557 in stock but the manager sold me the display model which is a #94393.
He only charged me $29.98 and I was happy when I got it home until I found out the nuts he gave me off the newer #61557 model do not fit the arbor on this one.
So instead of taking it back I think I am going to go to Home Depot and buy a 1/2" RH thread nut and a 1/2" LH thread nut instead of returning it.