... match bobbins Information : 1.Core material: MN-ZN Soft magnetism Ferrite core, Ni-Zn ,2.Core cost: not expensive3.Core range :EE, EEL, EI ... ,EC,EF,EFD,ETD,EPC,PQ,RM,UU ... .4.Can be supplied with their match bobbins 5.Core Usefulness :be used for ...