The Jo-Ral 6L is an adjustable Tenor Trombone Cup Mute that creates an exciting tonal quality and near-perfect intonation. They are made of spun aluminum, and have been tested to perform evenly in all registers.
For bell diameter 8-1/2" or more. With its unique shape, this all-aluminum cup mute produces a smoother, richer sound for tenor trombones. Lined with a neoprene rubber rim that eliminates vibrations, the adjustable cup will never loosen or drop off. It is easily installed by simply moving the cup up to the desired length for a tight fit. The corks may be reshaped for optimal acoustical placement.