Color pet dog flute

Product name: color pet dog flute
Product size: about 7.7cm long and 0.6cm diameter
Product weight: about 16g each
Product material: copper nickel plating
How to use: Loosen the sound wave adjustment screw. While blowing in air from the air inlet, rotate the adjustment lever to the exact pitch. After the adjustment rod is screwed in, tighten the sound wave adjustment screw.