adapter measurement

A couple simple questions
1. What size is the O.D. of the semi adapter that the rim centers on?
2. What thickness are the back rims faced to if running two semi aluminum rims?
Thanks Mike....

Really? Not one reply, come on guys help me out a little, please?

Kind of confused on what you are asking. The od for the hub centric ring would be the id of the semi wheel. Sorry I don't have the measurement as mine are already bolted on. Do you have a wheel to measure?

Face milling of the rear wheels is 3/8" per wheel. I don't know the wheel thickness to begin with but whatever it is minus 3/8".

Sorry I can't be more help.

thank you very much 3/8 is the answer i was looking i do have a steel wheel i can measure i figured it would be a couple thousandths less than the I.D. of the wheel i guess i just wanted a definite measurement but you helped out alot. I have the stock now to machine my own adapters including studs and lug nuts.. more to come later so in all THANK YOU.