The Bach Trumpet Mouthpiece in Silver has been the standard since being created by trumpet master Vincent Bach. This series of Bach trumpet mouthpiece is available in a variety of sizes to meet the needs of the individual player. The Bach mouthpiece numbering system is arranged in an orderly progression from the largest to smallest diameters numbered from low to high. 5C* / Medium / 16.25 mm / Medium wide, well rounded toward the inside and outside, fairly flat. / For players with a strong embouchure who do not like a sharp edge. The tone is lively and rich.