Small inner rim diameter with a medium cup. An ideal beginner's model for young players. Well-balanced rim configuration for flexibility and easy playability. Produced using the most advanced computer design and manufacturing technology, Yamaha's Standard Series mouthpieces feature unmatched precision, smooth attack, secure control, and easy playability. They have the ideal weight for all-around usage and are available in over 100 configurations. There’s a Yamaha mouthpiece to suit every player.