These boosters can be fitted to existing Denis Wick mouthpieces, converting them into Heavy Top mouthpieces. Particularly useful for players who need to play in various styles as they're easily fitted and removed.

Denis Wick Trombone Mouthpiece Booster Features:

• Help stabilize the sound
• Decrease effort
• Designed to fit most mouthpieces
• Please specify European or American large shank on euphonium mouthpieces

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