Handmade. This is a bamboo finger flute. It is not a souvenir from Okinawa. It is a practical item. The side-blown flute produces sound by covering both sides with fingers and blowing air into the middle hole. The end-blown flute produces sound by covering the bottom hole with your index finger and blowing air into the diagonally cut hole while covering the opposite side with your lips. It takes practice, so try various methods to get the hang of it. Size: Side-blown flute: Outer diameter 1.6cm, length 3cm