Feature:1. High quality aluminum alloy material, pressure resistant, lightweight and durable. 2. The surface of the product is polished and oxidized. 3. Low frequency and accurate tuning fork frequency. 4. The corresponding OM chakra is the heart chakra. Its vibration frequency and heart chakra location, two Rhine points and swallow tail points with the same vibration frequency, after knocking vibration when used in contact with the heart chakra location 5. Triangular silicone makes the tuning fork easier and more comfortable to hold. . 136.1Hz instrument set with alloy tuning fork . 136.1Hz instrument set with alloy tuning fork Specification:Features: High quality aluminum alloy material, pressure resistant, lightweight and durable. The surface of the product is subjected to high polishing and oxidation. Low frequency and accurate tuning fork frequency. The corresponding OM chakra is the heart chakra. Its vibration frequency and heart chakra location, two Rhine points and swallow tail points with the vibration frequency of the same, after knocking the vibration, when used in contact with the heart chakra location, you can feel the resonance. Triangular silicone makes the tuning fork easier and more comfortable to hold. Specification: Product Name: tuning fork Frequency: 136,1 Hz Material: Aluminum Alloy Color: Silver Size of the tuning fork: approx. 21,5 x 4 cm / 8,5 x 1,6 inches Hammer size: approx. 18 x 2 cm / 7,1 x 0,8 inch Silicone triangle size: approx. 5,5 x 3 cm / 2,2 x 1,2 inch Weight: approx. 140g List of packages: 1 x tuning fork 1 x Hammer 1 x Triangular Silicone . 136.1Hz instrument set with alloy tuning fork . 136.1Hz instrument set with alloy tuning fork