Silver with Carnelian
All Gem Feet attach to the bottom of the Otto Tune Tuning forks in 128, 136.1, or 64 htz (25mm recommend for 64 htz). They enhance the vibration and also administer the healing traits that are associated with the mineral or crystal. These feet are hand made in Germany.
The 15mm sizing is great for acupuncture, on bones, and acupressure points. Allows a direct stimulation to the focused meridians resulting in a spike of Nitric Oxide.