Aha niile maka lever igwe eji agbakwunyere na nnyefe ụgbọ ala - "mkpụrụ osisi," "gear lever," "gearshift," ma ọ bụ "shifter" - bụ ọdịiche dị na nkebiokwu ndị a. Aha gọọmentị ya bụ lever nnyefe. N'ime igbe akpaka akpaaka, a na-akpọ lever yiri ya dị ka "gear selector," ebe a na-akpọ lever ngbanwe dị na nnyefe akwụkwọ ntuziaka dị ka "mkpụrụ osisi."
Ebe a na-ahụkarị maka mkpanaka gia bụ n'etiti oche ihu ụgbọ ala, ma ọ bụ na console etiti, ọwara nnyefe, ma ọ bụ ozugbo n'ala. N'ihi ụkpụrụ mgbanwe site na waya, lever n'ime ụgbọ ala nnyefe akpaka na-arụ ọrụ dịka onye na-ahọrọ gia na, n'ime ụgbọ ala ndị ọhụrụ, ọ dịghị mkpa inwe njikọ na-agbanwe agbanwe. Ọ nwekwara uru nke inye ohere oche n'ihu ụdị bench zuru oke. O mechara bụrụ nke ewu ewu, mana enwere ike ịhụ ya n'ọtụtụ gwongworo, ụgbọ ala, na ụgbọ ala mberede na ahịa North America.
N'ụfọdụ ụgbọ ala egwuregwu ọgbara ọhụrụ, ejirila "paddles" dochie ihe eji eme ihe n'ụzọ zuru ezu, nke bụ otu ụzọ levers nke etinyere n'akụkụ ọ bụla nke kọlụm steering, na-arụkarị ọkụ eletrik (kama njikọ igwe na igbe gear), yana otu. na-abawanye ngwa ngwa na nke ọzọ ala. Tupu omume dị ugbu a nke ịwụnye "paddles" na steering (wepụrụ) n'onwe ya, ụgbọ ala Formula One na-ezobe mkpanaka gia n'azụ steering wheel n'ime arụ ọrụ imi.