Material: the tuning fork is made of good quality aluminim alloy, lightweight and durable, high accuracy Universal size: the tuning fork length is 8.46 inch/ 21.5 cm, width is 1.57 inch/ 4 cm, weigth 0.098 kg Precise frequency: the tuning fork has high accuracy, more likely to ring and more persistent ringing frequency Characteristic: a relatively low-frequency tuning fork also acts as a sensory test for vibration of a peripheral nervous system Usage: use this tuning fork to maintain balance and health; Put this tuning fork on the joints, muscles and nerves to help relax the body and release stress 128 Hz tuning fork aluminum alloy tuning fork offer accurate frequency response with a silicone hammer, a repair tool and a cleaning cloth packaged in a soft velvet bag Function: Precise frequency: high accuracy, more likely to ring and more persistent ringing frequency. A relatively low-frequency tuning fork also acts as a sensory test for vibration of a peripheral nervous system. Usage: Maintain balance and health. Put this tuning fork on the joints, muscles and nerves to help relax the body and release stress. Feature: Material: good quality aluminim alloy Size: 8.46 inch/ 21.5 cm in length, 1.57 inch/ 4 cm in width Weight: 0.098 kg Color: silver Note: To keep the tuning fork more accurate, please do not tap it with metal. You can use the repair tool to tighten the tuning fork when it was broken. After using a tuning fork, clean with a soft cloth and store in a dry place to prevent corrosion. Please keep it properly. Package quantity: 1 x Tuning fork 1 x Silicone Hammer 1 x Repair tool 1 x Cleaning cloth 1 x Soft velvet bag