An karɓo abin da aka yi na waje wanda aka mai da shi daban-daban, don haka zai iya isar da matsakaicin mara lubrication daban-daban.
Kayan aikin daidaitawa da aka ɗauka, babu haɗin ƙarfe tsakanin sassa masu juyawa, babu haɗari ko da bushewar gudu cikin ɗan gajeren lokaci.