The design of the Schlage F series cylinder was changed making it more difficult to pick these locks. The F Series Manipulation Kit allows you to defeat these locksets with ease. Manipulate F series leversets through the opening in the back of the handle. The unique punch tool allows you to punch a small hole in the neck of the knob for quick access to the spindle, regardless of the handing of the door. Open F Series knobsets and leversets quickly and easily, especially around door jambs where other tools just can’t!