[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. This frequencies is:C-128HZ Colour:Gold & Silver & Blue & Material:Aluminum alloy Size:About 21.5cm Package Contents: 2 x rubber mallet(Color is random, no specification is accepted) 2 x triangular silicone(Color is random, no specification is accepted) 5 x tuning forks 2 x storage bag 1 x cleaning cloth 1 x wrench 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.