YAMAHA HR-30D4 French Horn Mouthpiece Standard Series, CNC Machined, Smooth Attack, Rim Inner Diameter 17.08mm, Throat 4.50mm, Rich Tone Model

---------------------------------------------------------------------- High-precision mouthpieces manufactured using the latest computer-controlled processing machines. Smooth attack, easy control. We offer a diverse lineup to suit each individual's style. HR-30D4: A model with a larger rim diameter than the 29D4, resulting in a richer sound. Ideal for instruments with wide bells, and provides particularly stable intonation in the high register. Rim inner diameter (mm): 17.08 Throat diameter (mm): 4.50 High-precision mouthpieces manufactured using the latest computer-controlled processing machines. Smooth attack and ease of control. A diverse lineup is available to suit each individual's style. HR-30D4: A model with a larger rim diameter than the 29D4, producing a richer sound. Ideal for instruments with wide bells, and especially provides stable intonation in the high register. Rim diameter (mm): 17.08 Throat diameter (mm): 4.50