Product name: Turbo whistle

Applicable models: suitable for most

Main material: aluminum alloy

Size: M/L

Color: Red/Blue/Black/Gold/Silver

Set includes: 1 x turbo whistle 1 * small wrench 1 * screw

Whistle (caliber/length/weight):

m size 2.5cm, length about 10.6cm, weight about 78.5g

Size L is 2.8cm, length is about 11.5cm, and weight is about 101g

Each person's measurement method is different and there are some errors

Pronunciation principle: The whistle of the pressure relief sound, the aluminum whistle clipped on the exhaust pipe, the airflow through the exhaust pipe makes the sound.