YAMAHA Mouthpiece for Horn Standard Series HR-29D4 (YAMAHA HR29D4)

High-precision mouthpiece made with the latest computer-controlled processing machines. Smooth attack, easy control. We have a diverse lineup that caters to each individual's style. HR-29D4: A double cup that is a combination of a moderate V cup and an extremely deep V cup. The inner diameter of the rim is a little small, but the throat is thick and the sound is rich. Rim inner diameter (mm): 16.88 Throat diameter (mm): 4.50 High-precision mouthpiece made with the latest computer-controlled processing machines. Smooth attack, easy control. We have a diverse lineup that caters to each individual's style. HR-29D4: A double cup that is a combination of a moderate V cup and an extremely deep V cup. The inner diameter of the rim is a little small, but the throat is thick and the sound is rich. Rim inner diameter (mm): 16.88 Throat diameter (mm): 4.50