The Wing and Thumb Library dialog box allows you to easily add industry standard wing nut, wing screw or thumb screw to your Drawing. The parts models created are standard AutoCAD solid models that can be added to your assembly drawing as 2D or 3D entities. It's like having the Machinery's Handbook on-line. You just point, click and Wings will create a solid model of the wing nut, wing screw or thumb screw selected.