The toning fork is mainly used for musical instruments to tune, determine the standard tone, emit a clear and accurate tone. Tone fork is essentials for every musical instrument lover. The Tuning Forks Set comes with an extra long, sturdy Aluminum alloy handle for easy bone conduction assessment at all times. Combined with activities such as acupuncture, puncture, meditation, yoga and pranayama, it can help us to harmonise our body and mind and relieve stress Small and easy to carry the tuning fork. The steel tuning fork is small and easy to carry, convenient when traveling, and easy to tune before playing.They are useful tools for music lovers and a great gift for anyone who likes to . Great for tuning guitars, ukuleles, violins, pianos and keeping them in tune.Tuning forks are suitable for teachers or science enthusiasts, and can be used for home and travel.The tuning fork is a handy tool for tuning stringed instruments, as well as singing, physics teaching. The tuning forks music is made of aluminium alloy material, sturdy and , non-magnetic, light weight, wear-, not easy to rust, finely polished and electroplated, the performance is superior and the frequency accuracy is consistent, has a long service life. Colour:Silver&Black Material:Aluminum alloy + rubber Package Contents: 3 x tuning fork(128Hz, 256Hz, 512Hz) 3 x Rubber base 1 x Wrench 1 x Cleaning cloth 1 x Hammer(Colors and styles are random, no specified colors and styles are accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.