The Fair-Rite 2644777711 is a Ferrite Toroid Core, a crucial component in numerous electronic circuits. Supreme Components International is an authorised distributor of Fair-Rite, ensuring you receive genuine, high-quality parts. This solid core, made from Material 77, offers excellent performance characteristics. Its dimensions include an outer diameter (OD) of 11.43mm, an inner diameter (ID) of 6.35mm, and a height (H) of 4.75mm. Ferrite cores like this are commonly used in inductors, transformers, and filters to enhance performance by increasing inductance and reducing electromagnetic interference. The 77 material provides a good balance of permeability and core loss, making it suitable for a wide range of frequencies. Trust Supreme Components International for all your Fair-Rite component needs.