Abstract: A screwdriver is provided that can be used for installing and removing either single slot screws or screws having two slots that cross at their centers, i.e., "PHILLIPS" type screws. The screwdriver is provided with a shaft which includes a tip segment having a configuration suited for engagement in the slots of such a cross-slotted screw. An elongated slot is in the tip segment along the length of the shaft. A blade, suited for engagement in the slot of a single slot screw, is slidably mounted in the tip segment slot. When the blade is in a first position extended beyond the end of the shaft tip segment, it can be engaged in the slot of such a single slot screw. When the blade is in a second position retracted or housed within the elongated tip segment slot, the tip segment can be engaged in the slots of such a cross-slotted screw.