The 5977002721 is a high-quality Toroid Core manufactured by FAIR-RITE, a leading name in ferrite technology. This core is made from FAIR-RITE's popular 77 material, known for its excellent performance characteristics in a wide range of applications. As an authorised distributor of FAIR-RITE components, Supreme Components International ensures you receive genuine products with full manufacturer support. This toroid core is perfect for inductors, transformers, and other magnetic components. Its toroidal shape provides excellent magnetic field containment, minimizing electromagnetic interference (EMI). The 77 material offers a good balance of permeability and saturation flux density. Supreme Components International offers a wide selection of FAIR-RITE ferrite cores to meet your specific design requirements. Contact us today to learn more about this product and our other offerings.