Yon tournevis se yon zouti komen ki itilize pou vire yon vis an plas, anjeneral ak yon tèt mens ki gen fòm-ki anfòm nan yon fant oswa antay nan tèt vis la.
Beijing-Tianjin-Hebei-Lu-Jin and Shaanxi Shaanbei and northern Henan dialects are called "drivers", northern Henan is more called screwdrivers, Jiangxi, Anhui, and Hubei, Henan areas south of the Yellow River, Shaanxi Guanzhong are called "drivers" ", known as "Kai Dao" in the Midwest.
Gen sitou yon mo (siy mwens) ak kwa (siy pozitif). Genyen tou tournevis Egzagòn komen, ki gen ladan Egzagòn enteryè ak Egzagòn ekstèn.
