Made of Aluminum alloy. The frequency and scale letter is stamped on each fork. Now comes in a wooden box with foam lining. Each tuning fork has a specific place pre-cut in the foam for easy storage. It also comes with a mallet specially designed with one hard and soft end, for use with all frequencies of forks.

This set contains the following tuning forks:

Frequency: Note: 100, 128, 256, 288, 320 , 341.3, 384, 426.6, 480, 512, 1024, 2048, and 4096 Hz