Tuning Fork Boxed Set of 8 includes a wooden box with foam lining. Each aluminum alloy tuning fork has a specific place in the foam lining die-cut for easy storage. Also contains a mallet specially designed with one hard and one soft end for use with all frequencies of forks. Contains one each of tuning forks with frequencies of 256, 288, 320, 341.3, 384, 426.6, 480, and 512 Hz.