Features 1、Made of quality cooper material, the whistle is non-toxic and safe, sturdy and durable 2、The whistle is well-constructed, the surface is smooth and hurtless to finger 3、Precision machining of holes offers accurate sound and pitch 4、Lightweight, portable, easy to use and completely maintenance-free 5、Good instrument for kids or beginners Specification Features: Made of quality cooper material, the whistle is non-toxic and safe, sturdy and durable. The whistle is well-constructed, the surface is smooth and hurtless to finger. Precision machining of holes offers accurate sound and pitch. Lightweight, portable, easy to use and completely maintenance-free. Good instrument for kids or beginners. Specification: Material: Copper Key: D Size(Length x Mouthpiece Dia x Tube Dia): Approx. 30.3 x 1.5 x 1.2cm / 12 x 0.6 x 0.5inch Weight: Approx. 48g Package List: 1 x Whistle