Screwdriver

The utility model relates to the screwdriver technology, which is applicable for fastening and disassembling cross or slot type screws. The screwdriver is composed of a screwdriver handle (1), a screwdriver rod (3) and a screwdriver head (9). One end of the screwdriver (3) is fixed with the screwdriver handle (1), and the other end is provided with a screwdriver fork (5). A screwdriver wheel seat (7) is positioned in the screwdriver fork (5). A wheel shaft (13) is arranged on the two side fork bodies of the screwdriver fork (5). Four screwdriver heads (9) are arranged at the external flange of the screwdriver wheel seat (7) symmetrically, four locking holes are opened on one side of the screwdriver wheel seat (7) symmetrically, and each locking hole corresponds to reeds (15) in the corresponding lateral body of the screwdriver fork (5). The utility model has the advantages of easy replacement of the screwdriver head. Used as a wrench, the utility model saves labor and can be used in a narrow space on the longitudinal direction of the screws.