Biosonics Otto Tuning Fork Set (32 Hz, 64 Hz, 128 Hz)The Biosonics Otto Tuning Fork Set is the definitive toolkit for advanced somatic healing and physical vibration therapy. Featuring the 32 Hz, 64 Hz, and 128 Hz weighted forks, this set allows practitioners to address the entire physical body with precision. From the deep, grounding nerve stimulation of 32 Hz to the sacral and spinal work of 64 Hz, and finishing with the nitric oxide releasing power of 128 Hz, this trio provides a tiered approach to