The FAIR-RITE 5977000101 is a high-quality Toroid Core, manufactured using the company's signature 77 material. Supreme Components International, an authorised distributor of FAIR-RITE components, ensures that you receive a genuine product that meets stringent quality standards. This ferrite core is designed for a wide range of applications, including inductors, transformers, and noise filters. Its toroidal shape provides excellent magnetic flux containment, minimizing electromagnetic interference (EMI). The 77 material offers a good balance of permeability and core loss, making it suitable for both low and high-frequency circuits. Trust Supreme Components International for all your FAIR-RITE component needs.