...Correction to the address...batinc.net
British American Transfer.
I do NOT work with the Small cap (6 Bolts). I Machine for the Larger 3" Cap Aero 400 Series. 8 Bolts. The CAP alone is 3" Diameter. I was just at the site, They have both Keyed and non-key. Plus the Funnels.
Good Luck with it.
MJ