This Listing is for 5 sets of Pot Cores and Bobbins (10 core halves and 5 bobbins)

The cores are genuine Magnetics Inc product.

Size = 18 X 11 mm
AL value = 4000 (+/-25%)  mH/1000turns
Gap = None
Initial Permeability = 3000
Bsat = 490 mT / 4900 G

Recommended uses: Inductors, Filters, Transformers

For Mag Inc product listing:  mag-inc.com/products/ferrite-cores/ferrite-pot-cores