● Xargaha duuban ee duuban ee laba saf ah ayaa leh dhismo kala duwan
● Marka uu sido culeyska shucaaca, waxa uu qaadi karaa culeyska axial-ka ee labada dhinac
● Radial iyo axial rarka la isku daray iyo culeysyada qulqulka, kuwaas oo inta badan awood u leh inay qaadaan culeysyo shucaac ah, ayaa inta badan loo adeegsadaa qaybaha xaddidaya barakaca axial ee labada jiho ee shafka iyo guriga.