The Fair-Rite 2773009112 is a high-quality 77 Material Toroid Core designed for optimal performance in a range of electronic circuits. With outer diameter of 7.75mm, inner diameter of 3.96mm, and a height of 3.18mm, this ferrite core is suitable for applications requiring compact and efficient magnetic components. Toroid cores are known for their ability to confine magnetic flux, reducing electromagnetic interference (EMI) and improving circuit performance. As an authorized distributor of Fair-Rite products, Supreme Components International guarantees the authenticity and quality of this toroid core. This component is ideal for use in inductors, transformers, and other magnetic devices.