"The mouthpiece that I have chosen and that I utilize is a compromise, like all mouthpieces must be. The cup is slightly rounded which gives a warm sonority and the balanced proportions between the cup depth and the bore size gives an ease of response in all registers."

Specifications: Model #4 17.00mm #4 1/2 17.25mm #5 17.50mm #5 1/2 17.75mm #6 18.00mm

Some suggestions on choosing diameter, size from Francis Orval: "For a player with the larger lips and teeth the 5 or 5-1/2 would be suggested. The 6 is rarely used and most frequently used is the 4 or 4-1/2. Personally, I play on the model 4"