* High-quality materials: The full set of C128, C512, and C256 tuning forks are made of high-quality aluminum alloy with an integrated design, making them lightweight and durable. The tuning forks undergo strict testing and evaluation before delivery to ensure accurate frequency. * Lightweight and Easy to Use：Our tuning fork is ergonomically designed, with a handle that fits the natural grip of the hand. The thickness and length are just right, making it comfortable to use for long periods without easily feeling fatigued. * Portable and easy to store: The tuning fork is compact and lightweight, and comes with a dedicated storage bag (included with some models), making it convenient to carry when going out. * Multifunctional tuning fork: used for instrument tuning, music teaching, and therapeutic purposes. It is ideal for home, yoga studios, meditation, and rehabilitation centers. * This is an open box item. Only one bag is opened rest is sealed. Does not come with rubber ball hammer. Selling AS-IS. Please see photos and ZOOM for details.