![Vandoren B40 Clarinet Mouthpieces (Lyre, 13 Series P88)](http://www.northcountrywinds.com/cdn/shop/products/bec-vandoren-b40-lyre-clarinette-sib-ocn05kgij5isox69kxswywo80viygkauc6edlip5vk_{width}x.jpg?v=1640038070)
B40:
Same facing as the B45 with a wider tip rail, it produces a compact and centered sound.
Tip Opening: 119.5
Facing Length: Medium Long
B40 Lyre:
The perfect blend between a round sound and rich tone color. Easy blowing especially in the upper register.
Tip Opening: 117.5
Facing Length: Long