Denis Wick aluminum mutes are all handmade using hand-spun, high quality aluminum. Unlike machine-spun aluminum, the hand spinning process creates a higher density that is extra responsive and provides these mutes with their signature sound. The shape creates perfect intonation and helps increase projection. Also available with Copper and Brass bottom options.Denis Wick offers a range of trombone mutes to suit all players and playing situations. British-made, Denis Wick mutes are acclaimed worldwide for their sound quality and intonation in all dynamic ranges, plus superb workmanship.