Bach Symphonic Trumpet S6511C5 Mouthpiece, 1C/25/24, Silver-Plated Finish,

---------------------------------------------------------------------- Bach is the world's most popular trumpet mouthpiece. Previously, special mouthpieces were only available through custom orders. Now, they are available as part of the Symphonic series. As the name Symphonic suggests, this model is popular with orchestras and soloists. Cup: 1C (diameter 17.00mm / depth: M / rim: medium). Large diameter, medium cup for all-around use. Throat: No. 25 (3.81 mm). Allows more air to be blown straight through than the regular No. 27 (3.66 mm). Backbore: No.24 “Symphonic" Dark and loud sound. Standard backbore for A cup. The most popular size for special mouthpieces.