1.ferrite core|ferrite magnet|transformer core 2.range:EFD,EF,EE,EPC,ER,PQ ... ,RM,UU,EC,DR 3.Supply grind gap and matched bobbin ferrite core ... | soft ferrite core| transformer core| ferrite magnet coreCore material: MnZn power ferrite ... 0.21.367.6268.684660260024.00 EC2834 ferrite core for transformer bobbin