Screwdriver, a tool used to twist a screw to force it into place, usually with a thin wedge-shaped head that can be inserted into a slot or notch of a screw head - the Beijing-Tianjin-Hebei dialect is called "a gaizhui" ", Shaanxi, Anhui, Henan and Hubei and other places called the qizi. There are two main types (negative sign) and cross (positive sign). There are also common hex screwdrivers, including two kinds of out hexagonal and inner hexagonal.
From the structural shape, there are usually the following:
1, straight. This is the most common kind. The head model has one word, cross, meter, T (Plum), H (hex), etc.
2, L-shaped. More common in hex screwdrivers, use their longer rods to increase torque, which is more labor-saving.
3, T-shaped. Automotive industry more applications.
Sinotools is one of the professional
screwdrivers manufacturer in China.
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