Dhammaan magacyada kabaalka birta ah ee ku dheggan gudbinta gaadhiga-"ulaha gear", "kabadhka gear," "gearshift," ama "shifter" -waa kala duwanaanshaha weedhahan. Magaceeda rasmiga ah waa kabaalka gudbinta. Sanduuqa-gear-ka tooska ah, kabaal la barbardhigi karo waxaa loo yaqaan "qalabka xulashada", halka kabaalka wareejinta ee gudbinta gacanta loo yaqaan "ul-geeska."
Meesha ugu badan ee ul marshoku waa inta u dhaxaysa kuraasta hore ee baabuurka, ha ahaato konsole dhexe, tunnelka gudbinta, ama si toos ah dhulka. Mabda'a wareejinta-siliga awgeed, kabaalka baabuurta gudbinta tooska ah wuxuu u shaqeeyaa si ka badan sida xulashada qalabka iyo, baabuurta cusub, looma baahna in la yeesho xidhiidh beddela. Waxa kale oo ay leedahay faa'iido u oggolaanaysa kursi ballaadhkiisu dhan yahay oo qaabka kursiga hore u samaysan. Ka dib caannimadii way ka baxday, laakiin weli waxa laga heli karaa baabuur badan oo kuwa xamuulka qaada ah, kuwa yar yar, iyo baabuurta gurmadka ee suuqa Waqooyiga Ameerika.
Qaar ka mid ah baabuurta isboortiga ee casriga ah, kabaalka gear-ka waxaa si buuxda loogu beddelay "paddles", kuwaas oo ah labo kabaal oo ku rakiban labada dhinac ee tiirka isteerinka, oo badanaa ku shaqeeya furayaasha korantada (halkii ay ku xirnaan lahaayeen farsamada gacanta ee sanduuqa), oo leh hal. Kordhinta qalabka kor u kaca iyo kan kale hoos. Kahor dhaqanka hadda jira ee ku rakibida "paddles" ee isteerinka laftiisa (laga saaray), Baabuurta Formula One ayaa loo isticmaali jiray in lagu qariyo usha gadaasha isteerinka gudaha shaqada sanka.