The Fair-Rite 2643178551 is a high-quality Ferrite Toroid Core, expertly crafted from Material 43. This core is specifically designed for applications requiring efficient magnetic flux paths and minimal electromagnetic interference. Its toroidal shape provides excellent self-shielding properties, making it suitable for inductors, transformers, and other magnetic components. The core's dimensions are 17.78mm outer diameter, 10.16mm inner diameter, and 6.35mm height. Material 43 offers a good balance of permeability and core loss characteristics. As an authorized distributor of Fair-Rite products, Supreme Components International ensures that you receive only genuine, high-performance components. Trust Supreme Components International for all your Fair-Rite component needs.