Yupon-made practice mute, Little Silencer, for tuba SS, with tuning slide. This is a model not found in the catalog, and is even smaller than the S model. I was told at the time of purchase that it was suitable for Yamaha's compact models, but I used it on a European-made bass tuba with a narrow bore. It shows signs of use, but is still in relatively good condition and can be used for a long time. #tuba #tuba #Tuba