Features: - Made of integrated aluminium alloy, corrosion-resistant & non-magnetic.Lightweight and durable. - Clinical grade, weighted sensory tuning fork for evaluating hearing and vibratory sensation - Extended two-inch handle of turned smooth aluminum for facilitating bone conduction tests. - Ideal for medical offices,neurology, healing, sound therapists, physics labs, science class sound experiments. - Easy to carry, 128 hz、256 hz、512 hz tuning fork chakra set can be easily placed in any instrument case or pocket due to its small size. Package include: 3x tuning fork (128Hz、256Hz、512Hz) 1x Repair tool 1x Cleaning cloth 3x Velvet storage bag 1x Silicone hammer (black) Notes: 1.To keep the sound of the tuning fork more accurate, please use the attached striker to tap. 2.Please remember to clean the tuning fork with the attached microfiber cleaning cloth after each use, and store it in a dry storage bag. 3.Tuning forks have multiple functions, such as acoustics, medicine, ear picking, teaching, etc. You can choose the corresponding tuning fork according to your needs. 4.If you have any questions,just let us know and our dedicated customer service team will always bring a smile back! 5.We will develop more products in the future, if you have any suggestions, please let us know by message.