Introduction to screwdrivers

A screwdriver is a common tool used to turn a screw into place, usually with a thin wedge-shaped head that fits into a slot or notch in the head of the screw.

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.

There are mainly one word (minus sign) and cross (positive sign). There are also common hexagon screwdrivers, including inner hexagon and outer hexagon.