The Fair-Rite 3061990871 is a high-quality Ferrite Toroid Core, available through Supreme Components International, an authorised distributor. This core is constructed from Material 61, known for its excellent performance characteristics in a wide range of frequencies. Its dimensions include an Outer Diameter (OD) of 9.91mm, an Inner Diameter (ID) of 6.35mm, and a Height (H) of 3.18mm. This toroid core is suitable for applications such as inductors, transformers, and noise filters. Its compact size and superior material properties make it a reliable choice for demanding electronic designs. Supreme Components International is an authorised distributor of electronic components, ensuring you receive genuine Fair-Rite products.