KELLY Mouthpieces have developed over the past 30 years. Jim and Erin have shared a life of music in addition to owning and operating a precision CNC turning facility. This combination of brass-playing and machining-expertise lends itself perfectly to their end result – KELLY Mouthpieces. Their mouthpieces are designed, fabricated, tested, packaged, and warehoused at their plants in Fond du Lac, Wisconsin. They are continually expanding their product line. KELLY Mouthpieces - FEEL the Comfort!