Detail 01
1.044 inch cup diameter
Wider than every tenor model in the line, sitting just past the 53 and just below the bass-specific 58.

Independent shopping perspective
Large shank silver-plated mouthpiece with a 1.044 inch cup, sized for players who work across both tenor and bass trombone.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Wider than every tenor model in the line, sitting just past the 53 and just below the bass-specific 58.
Detail 02
Narrow for a cup this wide. Keeps resistance and centering rather than the open blow of the 19/64 on the 58 and 59.
Detail 03
Fits the wider receiver on large bore tenor and bass trombone slides only. It will not go into a small shank horn.
Detail 04
Why it suits doublers — one piece that works on both horns instead of switching rim size every time you change instrument.
Detail 05
Bare metal on the lips. Wipe it down after playing, since exposed silver tarnishes when left dirty.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Only large shank receivers, which is standard on large bore tenor and bass trombones. Medium and medium-large bore tenors use small shank pieces like the 50.
Both, in practice. At 1.044 inches it sits above the tenor sizes and below Schilke's dedicated bass models, which is what makes it work for players covering each.
The 58 is wider at 1.090 inches with a much larger 19/64 throat, aimed at doublers and full-time bass players. The 57 is tighter and keeps more resistance.
More diameter generally makes the low range easier to fill out, but it also asks more of your air and endurance. The narrow 15/64 throat here keeps it manageable.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.