- Extra shallow cup - Rim number: 42 - Semi-circular rim with wide edge - Comparable to the Bach Elkhart 3C & 6C, Bach 8C, 10B, & Schilke 14 - Backbore 692sL - Cup diameter: 16.66 mm (42/64") - Especially for high note players - Similar to the 692 backbores, but more efficient - Silver-plated EUR 235.00 - See more - Buy online