The 5975001821 is a high-quality Toroid Core from FAIR-RITE, a leading manufacturer of ferrite components. Supreme Components International is an authorised distributor of FAIR-RITE, ensuring you receive genuine products. This particular core is made from #75 material and comes uncoated, offering flexibility in application. Toroid cores are widely used in inductors, transformers, and chokes due to their efficient magnetic flux containment. The 5975001821 provides excellent performance characteristics, including high permeability and low core loss. Its robust design ensures reliable operation in demanding environments. Choose Supreme Components International for all your FAIR-RITE component needs.