Ozibuthe be-ferrite ababunjwe ngomjovo, omazibuthe be-ferrite ababoshiwe, yilabo kazibuthe be-ferrite abangunaphakade abakhiqizwa inqubo yomjovo. Izimpushana ezihlala njalo ze-ferrite ezihlanganiswe nezibophezelo ze-resin (PA6, PA12, noma i-PPS), zilandelwa ukujovwa ngesikhunta, omagnethi abaqediwe banomumo oyinkimbinkimbi kanye nokunemba okuphezulu kobukhulu.