A toolkit includes a handle and at least one bit set. The handle is in the form of a plate including a first cavity defined in a middle portion and a second cavity defined in a terminal portion. The bit set includes a bit and a cap non-rotationally provided on the bit. The cap is non-rotationally inserted through the first cavity where only a mild torque is needed. The cap is non-rotationally inserted through the second cavity where a large torque is needed.