This is a JodyJazz JET #6. The tip opening is approximately 2.03mm, but this is just a guideline. The material is polycarbonate, which gives a harder sound compared to rubber. Although it's a #6, it's easy to play, and you can produce a tone with an edge as you blow into it. It's a mouthpiece that can be used in various genres such as jazz, funk, and pop. There is some wear and tear, but there are no noticeable scratches, and there are no problems with normal use. When shipping, it will be placed in the pouch that came with the purchase and then packaged for shipping. Thank you for looking.