Tuning Fork Sets now come in a wooden box with foam lining. Each tuning fork has a specific place in the foam lining die-cut for easy storage. Each set also contains a mallet specially designed with one hard and one-soft end, for use with all frequencies of forks. Boxed set of 8, with mallet, in wooden box; contains one each of 256, 288, 320, 341.3, 384, 426.6, 480. And 512 Hz.