Nhazi nke igwe eji eme ihe Igwe eji eme ihe na-ezo aka na usoro edoziri iji gbanwee uzo nke wheel. Ọ nwere akụkụ atọ, ya bụ, usoro nhazi, usoro ike na mkpịsị aka.
Usoro ihe eji eme ihe bụ isi mbelata gia, pinion gear, ihe inyeaka mbelata gia, ndụdụ na-agbanwe, mkpanaka njikọ, wdg.