There is a Tuning Fork offered by us that is an acoustic resonator in the form of a two-pronged fork with the prongs (tines) formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out. The forks are part of whats known as sound therapy. This is an ancient cultural practice that makes use of singing bowls and chants to relieve pain. The offered Tuning Fork is made for commercial uses.