Wannan karkacekayan bevelAn yi amfani da saitin a cikin tarakta. A cikin tarakta, yana gaban tayar tuƙi da kuma bayan akwatin gear. Duk hanyoyin watsawa da harsashi ana kiransu da aksali na baya, kuma babban aikinsa shine haɓaka, ƙarawa, rage gudu da canza karfin juyi. Baya ga tarakta masu injunan da ke amfani da nau'ikan gear na silinda a matsayin watsawa ta tsakiya, yawancinsu suna amfani da nau'ikan gear na bevel, waɗanda ba wai kawai suna ƙara ƙarfin juyi da rage gudu ba, har ma suna canza watsa karfin juyi.