Sound and vibrations is an important physics concept for students, fork experiments are great visual examples of how vibrations cause sound waves. Then, our fork with hammer kit allows students to listen, experiment, and discuss different kinds of sounds, that students will . Features - Color: Beige. - Material: Wood, steel, rubber. - Size: Approx. 20.00X15.00X9.00cm/7.86X5.89X3.54in. - Acoustic : 512Hz. - To demonstrate resonance and , such as the sound conduction of vibration, , waves, , and amplification of sound. - Easy to use and operate, just gently tap the fork with the hammer. - Suitable for family and school science experiments, instrument equipment. - After using the fork, clean it with a cloth, and store it in a dry place with anti-rust oil. - Teach kids to tune their string instruments and help kids learn how to tune their instruments. Package list: 1 x fork on the Wooden Base 1 x Mallet