Hohner C Tuning Fork (10-Pack, 523.3 Hz)

The C Tuning Fork from Hohner is a pack of 10 metal tuning forks used for tuning your instrument. You simply hold the fork by the ball end and strike the two-prong side on a hard surface to cause the fork to vibrate at its tuning resonance of 523.3 Hz, which corresponds to the musical note C. You can then adjust the tuning of your instrument so that it matches that of the tuning fork.