Tirz Horn Mouthpiece Michael Holtzel Model - Brand: B. Tilz - Model Name: Holtzel Model 1 - Included: Mouthpiece pouch case Cup Diameter: 16.8 Bore Diameter: 4.2 Cup Depth: MF Rim Thickness: MB - B. Tilz is a leading German manufacturer of brass instrument mouthpieces and is highly regarded for its horn mouthpieces. - The Holtzel Model is a particularly popular model among Tilz's horn mouthpieces. - The Holtzel Model is designed in honor of horn player Michael Holtzel and features a well-balanced design that meets the demands of professional horn players. - Tilz mouthpieces are optimized for the traditional European horn tone and playing style, and the Holtzel Model in particular is characterized by a bright and soft tone, while also achieving powerful articulation and rich resonance.