Citroen C3 XR Shift Stick Gear Knob Citroen C3 XR

Duk sunaye na lefa na ƙarfe wanda ke haɗe da watsa mota - "sanduƙin gear," "gear lever," "gearshift," ko "shifter" - bambancin waɗannan kalmomi ne. Sunansa na hukuma shine lever watsa. A cikin akwatin gear na atomatik, ana kiran kwatankwacin lefa da "mai zaɓen kaya," yayin da madaidaicin motsi a cikin watsawa na hannu ana kiransa "sandalin gear."

Mafi yawan wuri don sandar kaya shine tsakanin kujerun gaba na mota, ko dai a kan na'ura mai kwakwalwa ta tsakiya, rami mai watsawa, ko kai tsaye a ƙasa. Saboda ƙa'idar canjawa ta hanyar waya, lever a cikin motocin watsawa ta atomatik yana aiki kamar mai zaɓin kaya kuma, a cikin sababbin motoci, baya buƙatar samun hanyar canzawa. Hakanan yana da fa'idar ba da izini ga wurin zama na gaba mai cikakken faɗin salon benci. Daga baya ya fita daga shahararsa, amma har yanzu ana iya samunsa akan manyan motocin dakon kaya, manyan motoci, da motocin gaggawa a kasuwar Arewacin Amurka.

A cikin wasu motocin wasanni na zamani, an maye gurbin lever ɗin gaba ɗaya da "paddles," waɗanda nau'i-nau'i ne na levers da aka ɗora a kowane gefen ginshiƙan tutiya, yawanci suna aiki da na'urorin lantarki (maimakon haɗin injiniya zuwa akwatin gear), tare da ɗaya. ƙara kayan aiki sama da sauran ƙasa. Kafin aikin da ake yi na shigar da “paddles” akan sitiyarin (cire) ita kanta, Motocin Formula One sun kasance suna ɓoye sandar gear a bayan sitiyarin a cikin aikin hanci.