Model Number: CR-14E-GP Rim Inner Diameter: 16.86mm Throat Diameter: 3.98mm Soft and beautiful tone. With a fine-grained sound quality, stable performance is possible from high to low notes. While there is some wear and tear, I personally feel it's still usable. It appears to be a discontinued product. Includes an adapter to fit a trumpet shank. The box and packaging are not included. It will be disinfected with isopropyl alcohol and carefully packaged for shipping to prevent damage.