the 10K Series mouthpieces are the culmination of 30 years of experience as a mouthpiece maker and 10,000 handcrafted professional mouthpieces sold.  These mouthpieces are computer machined from excellent German rod rubber. I have designed these mouthpieces for beauty of sound, response and excellent intonation. The 10K series mouthpieces are expertly manufactured  for me by master craftsman Wesley Rice of Rice Clarinet Works

All Fobes professional mouthpieces are designed to play at A440 with a 67mm barrel and A441 with a 66mm barrel.