Question : What is the material of this mouthpiece?
Answer : The mouthpiece is made of silver-plated brass, which enhances durability and offers a sleek appearance.
Question : What is the bore size of this mouthpiece?
Answer : The Denis Wick DW5880-4AL has a large bore size, which provides a rich and full sound with excellent projection.
Question : Is this mouthpiece suitable for professionals and students?
Answer : Yes, the Denis Wick DW5880-4AL is designed to be versatile and suitable for both professional musicians and students.
Question : Will it fit a 15mm bore?
Answer : The shank of the mouthpiece is the part that fits into the instrument's receiver. I don't know what '15mm bore' means. That might be a tuba receiver. Please see the following link for a good explanation by Dave Werden for Euphonium mouthpieces: http://www.dwerden.com/forum/showthread.php/22786-Euphonium-Shank-Sizes#.XcWPh5pKguU
Question : Will it fit a tenor or marching trombone?
Answer : It will fit a trombone with a large bore. It will not fit small bores. Do you know what yours is?
Question : If my marching baritone is a large shank would this fit?
Answer : Yes. The 'L' in the name, 'DW5880-4AL,' indicates that it is large shank.
Question : Will this fit a conn 15i baritone? Currently using a benge 6.5 al-s. I'm needing something to help my higher range and something more comfortable.
Answer : I use a DENIS WICKS SM68 and it suits me fine.
Question : So will this fit a marching baritone?
Answer : If it is a marching euphonium yes, but baritone no.
Question : Will it fit a Euphonium Yamaha 842? Will it be comfortable, easy to play all registers high and low, will it make a beautiful sound?
Answer : The 'L' in 4AL indicates large bore, which means it will fit the receiver on the Yamaha 842. The questions of comfort, ease of range, and beautiful sound are all subjective and depend on the mechanics of the player as well as the mouthpiece.