Detail 01
1.015" cup diameter (25.78mm)
Large. More lip vibrating means a broader sound, but you need the air and embouchure to fill it.

Independent shopping perspective
Schilke's 52D in silver — a large 1.015" rim with a deep D cup, built for symphonic trombone and for euphonium players who need a wide diameter.

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
Large. More lip vibrating means a broader sound, but you need the air and embouchure to fill it.
Detail 02
Deep. Darkens the tone and opens the bottom octave. Costs you brightness and some upper-register ease.
Detail 03
Wider than the 15/64 on most Schilke tenor models. Freer blow, more volume ceiling, less back-pressure to lean on.
Detail 04
Fits large-bore tenor and bass trombone receivers only. It will not seat in a small-shank horn.
Detail 05
Firmer, slightly grippier on the lip than gold. The standard finish; avoid if you have a silver sensitivity.
Detail 06
Same D-cup concept, wider rim. Pick 52D when the 51D feels cramped rather than when you want a different tone.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Only if it has a large-shank receiver — large-bore tenor or bass trombone. Small-bore and most student tenors take a small shank.
Yes. It's a listed choice for euphonium players who want a larger diameter than typical, though many use the 51D instead.
Nearly the same 1.015" rim, different cup. The 52 is a standard depth; the 52D goes to the deep D cup for symphonic weight.
For most, yes. A 1.015" rim with a deep cup takes developed air support. The smaller Schilke models are the usual starting point.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.