- Standard series - Outer diameter: 27.08 mm (1.066") - Inner diameter: 16.66 mm (0.656") - Cup shape: Shallow cup - Relative cup depth: 4 - Shape of the backbore: MT - Silver-plated - Comparable to Bach 3D / 3E, Curry 3DE or Monette B5L EUR 153.00 - See more - Buy online