Patent ID: 8443973

Claim:
A screwdriver, comprising: a shaft; at least one tool bit with a drive end and a rear end, the rear end being of hexagonal cross section to be inserted into one end of the shaft; and a handle connected to the other end of the shaft, and including a cuddy portion having two parallel side walls, a storage room defined between the side walls, a longitudinal partition parallel to the side walls, at least two elastic partitioning arms transversely extending from opposite sides of the longitudinal partition, and at least four retaining ribs; the longitudinal partition and the transverse arms together dividing the storage room into a plurality of compartments between the side walls; the four retaining ribs being disposed in each of the compartments; and two of the retaining ribs being formed on an inner wall surface of the respective side wall and the other two being on a respective side surface of the longitudinal partition; wherein each of the four retaining ribs has an inclined surface for abutting against a respective facet of the hexagonal rear end of the tool bit, and each of the elastic partitioning arms is formed with a knob on a side thereof to bear against another facet of the rear end of the tool bit such that when the tool bit is inserted in the respective compartment, the hexagonal rear end of the tool bit is fitted in among the four retaining ribs and is securely retained in position by the partitioning arm.