The Custom Series B are seven-part mouthpieces designed for bass trombones. The Custom series mouthpieces are my most advanced and finely tuned mouthpieces. This is the series to consider if you want to perfectly match a mouthpiece to your horn.
The Custom Series B mouthpieces have a stainless steel cup and rim, a Delrin cup insert, a tuned throat insert, a brass shank with a tuned bushing and a weight collar. There are several rims to choose from to suit your preferences.