This is a Classic #2 trumpet mouthpiece designed as an Eric Miyashiro model and manufactured by GR Mouthpieces. In terms of actual use, it's excellent, and the ease with which high notes can be played is particularly impressive. Among the mouthpieces I've used so far, it's one of the easiest for playing high notes, allowing them to be reached naturally and without strain. Furthermore, the tone in the high register is very distinctive, with a solid core and power, yet without becoming thin or weak, allowing for a sound with a strong presence. Also, due to the unique design of this mouthpiece, your lips and the muscles around your mouth don't tire easily, even during long performances, providing a very comfortable playing experience. It's a very well-balanced mouthpiece, combining the ease of playing high notes, the power of the tone, and comfort during performance.