When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay. NEW LOT of 2 Dexter Heavy Duty Industrial Magnet Block Ferrite (?) 4" x 6" x 1" This product data sheet is originally written in English. NEW LOT of 2 Dexter Heavy Duty Industrial Magnet Block Ferrite (?) 4" x 6" x 1" This is awesome. I actually cannot find these anywhere. They were made by Dexter and we believe they are Ferrite, but not 100% sure. They are heavy and I gave the dimensions. Hopefully you can make use of these. I am also sure they are worth more than I am asking!!! We will ship this to you for free in the US!!! Will ship international (I get good rates - email for an estimate) please ask questions. Please look at pictures. NEW LOT of 2 Dexter Heavy Duty Industrial Magnet Block Ferrite (?) 4" x 6" x 1" This is awesome. I actually cannot find these anywhere. They were made by Dexter and we believe they are Ferrite, but not 100% sure. They are heavy and I gave the dimensions. Hopefully you can make use of these. I am also sure they are worth more than I am asking!!! We will ship this to you for free in the US!!! Will ship international (I get good rates - email for an estimate) please ask questions. Please look at pictures. Model core MPN P68R1460B Brand Dexter