Slotted finder screwdrivers make it easy to drive slotted screws. There is a spring loaded sleave that slides over the screw, keeping the bit centered over the screw. This set includes one each: #6-8, #8-10, #10-12. These are closeouts because we have so many of them and slotted screws are not used as much as they once were. They are great tools. Closeout items are non-returnable.