Idea of Toolbox Icon
It's an image of a toolbox. Is a rectangle with a horizontal line through the center about one third of the way form the top. There are two small rectangles on the horizontal line representing locks. Centered on top of the box is a small rectangle representing a handle.
This page contains the Toolbox vector icon, as well as variations of this icon in different visual styles, and related icons. All icons are in the flat vector style, however, differ by the line thickness, fill, and corner radius.