"Mouthpiece For Bass Clarinet Material: Black ebonite, Tip opening: 1.87 mm, Middle course, Deep, full sound, especially in the high register, The BD5 offers the bass clarinet player an approach similar to that of a Bb..."

Vandoren B 44 bass clarinet mouthpiece, tip opening 1/100mm: 184, facing length: M (medium), recommended reed strenth 3/ 3,5/ 4, extremely popular mouthpiece designed for classical playing

Vandoren B 50 bass clarinet mouthpiece, tip opening 1/100mm: 215, facing length: L (long), recommended reed strenth 2,5/ 3/ 3,5, produces a rich and velvety sound, even in the upper register.

Vandoren B40 Bass Clarinet Mouthpiece - 193/100mm tip opening, ML (medium long) facing length, recommended reed strength 2.5-3.5, designed to enable the use of soft reeds without with the sound of a hard reed.