[HIGH QUALITY] Adjusting Fork Set is made of high quality material. Compared with steel tuning forks on the market, it is more refined in workmanship, lighter in weight, and durable in corrosion-resistant aluminum alloy construction. [Accurate Frequency] Tuning Fork Set has more accurate frequency and frequency up to 25 seconds. [Multifunctional] Adjustment Fork Set is suitable for treatment. great for repair, balancing energy centers, enhancing focus, purifying the mind and body, and also great for wellness treatments and playing with pets. [WHAT YOU WILL RECEIVE] Tuning Fork Set Includes: 194.18 Hz,210.42 Hz,126.22 Hz, 136.1 Hz,141.27 Hz,172.06 Hz,221.23Hz,272.2Hz Colour:As Shown Material:aluminum alloy Package Contents: 8 * tuning fork 1 * mallet (The color is random, no designation is accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.