S-Bocal
The S-Bocal gets its name from its curved form, which closely resembles the letter S. The S-Bocal is attached to the wing joint and big bocal with slide of the instrument on the bassoon and contrabassoon and can be changed at will by the musician. In particular, the choice of the metal used and the type of alloy, the length and the diameter of an S-bocal have a significant influence on the sound and playability of an instrument.