Jakar jakar da ke tsaye kuma ana kiranta da jakar tallafi da kai. Dangane da hanyoyi daban-daban na ɓangarorin gefen, an raba shi zuwa bandeji na gefe guda huɗu da bandeji na gefe uku. Ƙwaƙwalwar gefuna huɗu yana nufin cewa akwai wani yanki na ƙarami na yau da kullun ban da hatimin zik ɗin lokacin da kunshin samfurin ya bar masana'anta. Lokacin da ake amfani da shi, ana buƙatar da farko a yayyage baƙar fata na yau da kullun, sannan a yi amfani da zik ɗin don gane maimaita hatimi. Wannan hanyar tana magance rashin lahani cewa ƙarfin baƙar fata gefen zik ɗin ƙarami ne kuma bai dace da sufuri ba.