10 T80-2 Toroid Core Made in the USA
Made in the USA by Micrometals, make sure the seller is in the USA, T80-2 Toroid Core OD = .795 in / 20.2 mm +/- 0.02 in ID = .495 in / 12.6 mm +/- 0.02 in Ht = .250 in / 6.35 mm +/- 0.025 in AL=5.5 +/- 5 % uH=(AL*Turns sq.)/1000 Optimum Resonant Circuit Range 250 KHz - 10 MHz