| Specifications |
| Level |
Custom |
| Key of |
C |
| Key System |
Full Conservatoire |
| Bore Style |
American |
| Octave Keys |
Semi-automatic |
| Mechanical Features |
Left-hand F key; Fork F resonance key; 'Philadelphia D key'; 3rd octave keY |
| Upper Joint Material |
Grenadilla with Ebonite Inner-pipe |
| Lower Joint Material |
Grenadilla |
| Bell Material |
Grenadilla |
| Key Material |
Nickel Silver |
| Plating |
Silver |
| Tone Holes |
POM Resin (except metal octave vents) |
| Thumb Rest |
Fixed |
| Trill Keys |
Low B - C# ; low C - Db ; C# - D# ; D# - E ; F# - G# ; G# - A ; Ab - Bb ; A# - B ; B - C# ; left C - D; right C – D |
| Spring Type |
Blue Steel |
| Cork Pads |
20 |
| Felt Pads |
3 |
