Includes 1 Kazoo Ring with replaceable diaphragm (sold separately). Simply hum into the hole on the side and enjoy kazoo awesomeness on the go! Currently available in a men's 10 ring size. Go for our grab bag of 10 rings and save $20! Attribution: Based on the excellent design by Pompmaker1 on Thingiverse.com 3614144 Notes on 3D Printing and Quality: I hold my prints to a high standard of quality and what you see in the photos is indicative of what to expect from your order. However, due to the nature of 3D printing, these products may have visible filament printing lines and/or bed adhesion artifacts. These don’t affect the functionality of the product, however if you’re unsatisfied with the product you’ve received, I’ll do what I can to reprint them to your satisfaction.