Thanks U.M.
Actually I am a machinist of 25 years and I am working on a new design of puller that is a bit more simple and gives the most even support possiable to the pulley. I was just curious if someone knew the thread size off hand. If not I will quit being lazy and just measure mine. LOL
I am also working on Titanium caster/camber plates and some very trick Alu. seat mounts.