Abstract: The present invention provides a device for applying torque to rotatable mechanical fasteners having variously sized outer circumferences, the device comprising a flat wrench plate with a central opening therein. The central opening includes notches of various sizes, and each notch is sized and shaped to fit around and engage a different sized nut or bolt. Between each pair of adjacent notches is a protrusion directed towards the center of the central opening. The flat wrench plate is mounted within and at one end of a short, hollow handle. Preferably, the wrench plate is generally circular and the hollow handle is a cylinder sized to fit easily within a user's hand so that the user can easily grip and rotate the handle. In one embodiment, a clear cover plate having an aperture therein is mounted within the cylindrical handle at the end opposite the wrench plate. In a different embodiment, another wrench plate with different sized notches is mounted in the handle opposite the first wrench plate.