2set EF20 horizontal 5+5pins 20mm 10mm 5mm Ferrite Cores and bobbin, transformer core, inductor coil
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We use the Polyethylene foamed sheet to protect the ferrite cores and bobbins, then use the air column, don't worry!
EF20 5+5pins Ferrite Cores
core size(mm): (the third picture)
each set =2 ferrite halves + 1 bobbin