Model
Series / Instrument Type | Millimeter | Decimal | Fraction | Throat Size | Cup Depth | Part # | Price |
| B10 | | | | #27 - .144" | | 40803 | $65.00 |
| B Series / Trumpet backbore | Standard used with "C" cup tops |
|
| B117 | | | | #27 - .144" | | 40810 | $65.00 |
| B Series / Trumpet backbore | Piccolo used with "E" cup tops, favors the upper register |
|
| B24 | | | | #27 - .144" | | 40804 | $65.00 |
| B Series / Trumpet backbore | Bigger, darker, symphonic, used with "A" cup tops |
|
| B25 | | | | #27 - .144" | | 40805 | $65.00 |
| B Series / Trumpet backbore | Recommended for "V" cups |
|
| B3 | | | | #27 - .144" | | 40801 | $65.00 |
| B Series / Trumpet backbore | Dark Sound |
|
| B41 | | | | #27 - .144" | | 40806 | $65.00 |
| B Series / Trumpet backbore | Bright - with resistance |
|
| B57 | | | | #27 - .144" | | 40807 | $65.00 |
| B Series / Trumpet backbore | Bright and lively |
|
| B7 | | | | #27 - .144" | | 40802 | $65.00 |
| B Series / Trumpet backbore | Dark Schmidt style used with "B" cup tops |
|
| B76 | | | | #27 - .144" | | 40808 | $65.00 |
| B Series / Trumpet backbore | Bright and edgy sound - Commercial used with "D" and "F" cup tops |
|
| B87 | | | | #27 - .144" | | 40809 | $65.00 |
| B Series / Trumpet backbore | Big - very free blowing |
|
| GIR1 | | | | #27 - .144" | | 40966 | $65.00 |
| GIR Series / Trumpet backbore | Tightest of "GIR" Series |
|
| GIR117 | | | | #27 - .144" | | 40971 | $65.00 |
| GIR Series / Trumpet backbore | Piccolo |
|
| GIR2 | | | | #27 - .144" | | 40967 | $65.00 |
| GIR Series / Trumpet backbore | Smaller than GIR3 |
|
| GIR3 | | | | #27 - .144" | | 40968 | $65.00 |
| GIR Series / Trumpet backbore | Standard |
|
| GIR4 | | | | #27 - .144" | | 40969 | $65.00 |
| GIR Series / Trumpet backbore | Darker and more free blowing than GIR3 |
|
| GIR5 | | | | #27 - .144" | | 40970 | $65.00 |
| GIR Series / Trumpet backbore | Largest of "GIR" Series |
|
| P | | | | #27 - .144" | | 40919 | $65.00 |
| P Series / Trumpet backbore | Very tight |
|
| PUR | | | | #27 - .144" | | 40845 | $65.00 |
| PUR Series / Trumpet backbore | Replica of old Purveyance tight playing backbore |
|
| R2 | | | | #27 - .144" | | 40930 | $65.00 |
| R Series / Trumpet backbore | Similar to B10 |
|
| R69 | | | | #27 - .144" | | 40931 | $65.00 |
| R Series / Trumpet backbore | Bright focused sound |
|
| R692 | | | | #27 - .144" | | 40932 | $65.00 |
| R Series / Trumpet backbore | Combination of R69 and 69 more open than 69, great lead backbore |
|
| RZR | | | | #27 - .144" | | 40932 | $65.00 |
| R Series / Trumpet backbore | Very tight |
|
| S72 | | | | #27 - .144" | | 40961 | $65.00 |
| S Series / Trumpet backbore | Free blowing, good for upper register |
|
| SA | | | | #27 - .144" | | 40926 | $65.00 |
| S Series / Trumpet backbore | Tight and bright |
|
| SB | | | | #27 - .144" | | 40927 | $65.00 |
| S Series / Trumpet backbore | Straight slightly more open |
|
| SC | | | | #27 - .144" | | 40928 | $65.00 |
| S Series / Trumpet backbore | Standard |
|
| SD | | | | #27 - .144" | | 40929 | $65.00 |
| S Series / Trumpet backbore | Darker and more free blowing than SC |
|
| SE | | | | #27 - .144" | | 40842 | $65.00 |
| S Series / Trumpet backbore | Large |
|
