Mouth Kazoo Metal Kazoos with Adjustable Tone | Beautiful Gift Box For Kazoo Present Simplest Musical Instrument with Silicone Head Cover Aluminum Kazoo For Adult Rotation Gear AdjustmentWe adjust the tightness by rotating the gear, thereby changing the vibrating range of the flute membrane, and depending on the breath of blowing, we can adjust different timbres. High-grade MaterialEven if we use Metal kazoos for a long time, it is not easy to damage. It is made of high-quality material. Aluminum alloy material flute body, no rust, no discoloration, comfortable grip. Simple to PlayYou can easily master playing skills without learning music theory or even practice. The tone can be adjusted by twisting the cap on the membrane. Just hum, don't blow. Protect The MouthpieceKazoo flute diaphragm is very light and easy to carry. It features a silicone head cover. This design can not only better protect the mouthpiece. It can also ensure the hygiene and safety of the mouthpiece. Meticulous Mouthpiece Slot DesignSaliva won't be blown into the product while the Mouth kazoo is playing because the upper and lower teeth are biting into the groove position. as a result of the mouthpiece's three horizontal grooves.