[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 in corrosion-resistant aluminum alloy construction. [Accurate Frequency]Tuning Fork Set has more accurate frequency and frequency up to 25 seconds. 126.22HZ,136.10HZ, 141.27HZ, 172.06HZ, 194.18HZ,221.23HZ,270.20HZ,210.42HZ With Massage ball [Multifunctional]Adjustment Fork Set is suitable for music. great for music, balancing energy centers, enhancing focus, purifying the mind and body, and also great for wellness music and playing with pets. This frequencies is: 126.22HZ,136.10HZ, 141.27HZ, 172.06HZ, 194.18HZ,221.23HZ,270.20HZ,210.42HZ Material: Aluminum alloy colour: Silver Package Contents: 2 x rubber mallet (random colors, don't accept the specified color) 8 x tuning forks(126.22HZ,136.10HZ, 141.27HZ, 172.06HZ, 194.18HZ,221.23HZ,270.20HZ,210.42HZ)With Massage ball 1 x storage bag 1 x cleaning cloth(random colors, don't accept the specified color) 1 x wrench 1 x Activation block 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.