The Fair-Rite 6678212021 is a high-quality Ferrite Toroid Core, essential for numerous electronic applications. Constructed from Material 78, this core provides optimal performance and reliability. Its dimensions are 21.3mm outer diameter (OD), 12.7mm inner diameter (ID), and 6.35mm height (H). Toroid cores are commonly used in inductors, transformers, and filters due to their efficient magnetic properties and self-shielding characteristics. This Fair-Rite core is suitable for applications requiring stable inductance and minimal electromagnetic interference. Supreme Components International is an authorized distributor of Fair-Rite, guaranteeing the authenticity and quality of this product. Choose this toroid core for your next project and experience superior performance.