The Fox Double Star *CVC* Bocal was created specifically for use with thick wall style bassoons. This includes Fox model 601 and 660 bassoons as well as most Heckel bassoons made in the last five decades. They are not recommended for standard wall style bassoons.
Fox *CTC* bocals are available in lengths 0 through 4, with #0 being the shortest length. Lengths #1, #2 and #3 are considered the "normal" lengths.
The standard platin...