Also the he ingenious design of the Rhino, with only two points of contact in the mouthpiece (upper part and the cane), is easy to use and once properly adjusted the cane will be secure when you need to move your mouthpiece. It’s Versatility, allows you to use it on several instruments. The Rhino can be made to the extent for any mouthpiece. See the chart down. This model of Rhino it was available in three sizes.