【High-Quality Materials】 Vincent Bach trombone mouthpieces are made of durable brass and finished with chrome plating. This ensures excellent tone and durability. 【Comfortable Playability】 The 7C model has a cup diameter of approximately 25.4mm and an inner diameter of approximately 7.5mm, accommodating a wide range of notes and providing a comfortable fit for the player. 【Professional Specifications】 This mouthpiece is also favored by professional trombone players and is an essential item for enhancing musical expression. - Brand: Vincent Bach - Model: 6-1/2A - Material: Brass - Finish: Chrome Plated - Cup Diameter: Approximately 25.4mm - Inner Diameter: Approximately 7.5mm Thank you for viewing.