A 3d rendering of two 3D rendering of a cylindrical structure with a yellow sprocket in the center. the structure consists of two white rectangular boxes, each with a square base and a rectangular opening at the top. The sprocket is positioned in the middle of each box, with a diameter of approximately 300 mm and a height of approximately 2.70 mm, and is positioned on the left side of the image. the box on the right side has a height difference between the two, with the sprocket being the main focus of the design. both boxes are placed on a plain gray background, and the image is a perspective view from a top-down perspective.