Set of 8 Tuning Forks with Mallet - Middle C to C Above Middle C (256 Hz, 288 Hz, 320 Hz, 341.3 Hz, 384 Hz, 426.6 Hz, 480 Hz, 512 Hz)Set of 8 NAS aluminum alloy Tuning Forks and 1 mallet in a wooden storage box Includes 1 each of the following frequencies: C 256 Hz, D 288 Hz, E 320 Hz, F 341. 3 Hz, G 384 Hz, A 426. 6 Hz, B 480 Hz, and C 512 Hz Mallet is specially designed with one hard and one soft end, for use with all frequencies of forks Each tuning fork has a specific place in the case for easy storage Used for and in scientific experiments. It is also a musical instrument that