W.D.2F

Be sure to read the Offering Details/ Rules Tab below:

The Deck model 2F features a conical Helleberg style cup, a.375- 9.52mm bore, and 32.6mm I.D. flatter/wider rim. 33.2mm and 33.5mm I.D. rim options are available. The #2F rim is identical to the #3F.

This is a huge bore for this style mouthpiece. I'd recommend going with the #1F and have it bored out incrementally if yo wish to lower the resistance. If you have an original #2F and like it, this is for you.