Garibaldi AHDC4 Classic Alto Horn Double Cup Mouthpiece Size DC4 The Garibaldi Classic Alto Horn Double Cup Mouthpiece is the perfect choice for any alto horn player looking to improve their sound. Crafted with precision and attention to detail, this mouthpiece features a unique double cup design that provides enhanced projection, articulation, and tone. The Garibaldi Classic Alto Horn Double Cup Mouthpiece is constructed from top-quality materials. Its precision-crafted design provides smooth and even response across all registers, making it an excellent choice for both beginners and professionals alike. Details: CUP SIZE: GAR-AHDC4, EXT RIM SIZE: 34.67mm, INT RIM SIZE: 17.53 mm, THROAT: 4.77mm, CUP DEPTH: Double Cup