The Fair-Rite 4277242409 is a high-quality Toroid Core, crafted from the company's popular 77 material. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring you receive a genuine product. This ferrite core is designed for applications demanding efficient magnetic properties and minimal energy loss. The toroidal shape provides superior flux containment compared to other core geometries, reducing electromagnetic interference and improving overall circuit performance. This core is suitable for inductors, transformers, and other magnetic components. Trust Supreme Components International for reliable electronic components and expert support.