The Fair-Rite 9677352509 is a 77 Material Toroid Core, available at Supreme Components International, an authorised distributor of Fair-Rite electronic components. This ferrite core is designed for optimal performance in a variety of applications. With dimensions of A = 12.5 mm, B = 7.5 mm, and H = 5 mm, this toroid core offers excellent magnetic properties. The 77 material provides a specific permeability suitable for various inductor and transformer designs. Choose this reliable component for your next project, knowing you are sourcing from an authorised distributor.