Aluminum Whistle

This is a whistle made of aluminum, 1 27/32"L x 3/8"D. It is not just a whistle, but also a key chain that can be hung directly on the keychain. Whistle is often used when people are training or playing. Whistling during training can make the trainer more tidy, and the whistle during the game is because the whistle sound is more direct. The whistle is small, but the sound can be very large, and it is often used for help in emergency situations. A small whistle with a keychain, I don't know when it will come in handy. We can help you laser logo.