Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! Good Choice for Guitar, Ukulele, Violin, Piano Keyboard and Many Other Musical Instruments. Made of Good Quality Aluminum, Durable and Safe to Use. the Edges of theAre Polished, Very Smooth. Mini Musical Instrument That You Can Put in You Pockets or Bags, and You Can Enjoy Music Anytime and Anywhere. a Perfect Gift for the Kids and Who is Music Lover. Easy to Play, Kids Also Can Learn to Play It Very Quickly. How to Play kazoo: Detailed Instructions Are Attached to the PackageType: Kazoo Material: Aluminum Alloy Length: 4.72in/12cm