Detail 01
1.00 inch cup diameter
Mid-range for tenor. Enough rim for a full sound without the endurance cost of the wider 52 or 53.

Independent shopping perspective
A 1.00-inch silver-plated small shank mouthpiece for medium and medium-large bore tenor trombone. The middle-of-the-road choice when you want one piece that does everything.

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
Mid-range for tenor. Enough rim for a full sound without the endurance cost of the wider 52 or 53.
Detail 02
Wider than the 15/64 on most of the line, so it blows freer and stays open at loud dynamics.
Detail 03
Seats only in the narrower receiver of medium and medium-large bore tenor slides. It will not fit a large shank horn.
Detail 04
Full blank rather than the trimmed 42B and 43A contour pieces aimed at lead work, so it favors an even range over high-register ease.
Detail 05
Bare metal against the lips and against air. It tarnishes if left dirty, so wipe it down after playing.
Detail 06
Same 1.00 inch diameter with a medium-deep cup, medium-wide rim and F throat if you want more rim comfort.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Only if your slide has a small shank receiver, which is standard on medium and medium-large bore tenor trombones. Large bore tenors and bass trombones use the large shank version.
The 51 is slightly wider at 1.010 inches with a large bowl-shaped cup and a J throat, aimed at large bore tenor and orchestral playing. The 50 is tighter and more general-purpose.
No. Bass trombones take a large shank, and Schilke's bass sizes run from the 58 up to the 60, all far wider than 1.00 inch.
It takes more air than the 15/64 throat used on most of the line, but it gives back a freer blow and more room at volume. Most tenor players adapt quickly.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.