1" O/D Uncoated toroid. Fair-Rite P/N 5975001301, High PermeabilityType 75 MnZn material. Flux Density: 4300 Gauss, Core Constant: 20, Inductance Factor: 3140nH, Effective Path Length: 6.2cm. For Broadband & Pulse transformers.
O/D: 1" I/D: .610" T: .25" WT: .02
