Vandoren CM309 B45 Dot Traditional Bb Clarinet Mouthpiece Very similar to B45 but with a greater blowing ease. Same technical characteristics as the B45 with a great blowing ease. Tip Opening - 119.5 (1/100mm) Medium Long Facing Works best with Vandoren #2.5-#3.5+ Reeds Traditional Beak Vandoren B45 Dot Bb Clarinet Mouthpiece, Traditional.