A multi-purpose tool system installed on the handle bars of a conventional bicycle. The tool system is formed of a main body, and an expansion mechanism, a plug and a fastener. The expansion mechanism is inserted in an open end of a handle bar of a bicycle and the fastener is tightened. This causes the expansion mechanism to expand and tighten against the interior surface of the handle bars thereby holding it in place. The expansion mechanism is formed of a plurality of wedges that are held together by binders. The main body holds a plurality of bits and a cover that includes a driver is connected to the main body by a locking mechanism. When a tool is needed, the cover is removed from the main body, a bit is removed from the main body and inserted into the driver and the cover is used as a handle.