Kwalan Dewar yawanci suna da bawuloli huɗu: ɗaya don taya, ɗaya don gas, ɗaya don fanko, ɗaya zuwa fanko, ɗaya don haɓaka matsi. Bugu da kari, akwai ma'aurata matsi da ma'auni na matakin ci gaba. Dewar silsi suna sanye da kayan aikin ɓoyayyen diski da kuma ƙimar aminci.