The Fair-Rite 2661000301 is a high-quality Ferrite Toroid Core, available through Supreme Components International, an authorised distributor of Fair-Rite components. This core is constructed from Material 61, known for its excellent performance characteristics in a wide range of frequencies. Its toroidal shape ensures efficient magnetic flux containment, minimizing electromagnetic interference. The core's dimensions are precisely engineered: 26.67mm Outer Diameter (OD), 14.73mm Inner Diameter (ID), and 11.1mm Height (H). These dimensions make it suitable for applications such as inductors, transformers, and chokes. Choose this Fair-Rite core for reliable performance and optimal circuit design. Supreme Components International guarantees authenticity and quality.