Quick Comparison - The GR 65 Series cup diameter is similar to a conventional 5 diameter.
Classic Blank is standard. Symphonic Blank is standard on the C** and C models.
Studio, Symphonic, and FatBoy are available as a special order on some models.
Backbores, other than listed, are special orders.
Also available as a standard order:
Ask us about other 64 Series designs on file!