Garibaldi TBDC4 Classic Trombone Double Cup Mouthpiece Size 4 The Garibaldi Classic Trombone Double Cup Mouthpiece is the perfect choice for any Trombone 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 Trombone 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-TBDC4, EXT RIM SIZE: 44.19mm, INT RIM SIZE: 22.60mm, THROAT: 4.77mm, CUP DEPTH: Double Cup