The image shows a display case with three different types of mechanical components displayed on it. On the left side of the display case, there is a black and white image of a metal object with a curved shape and a small hole in the center. Next to it, there are two smaller images of the same metal object, one of which appears to be a cylinder or a cylinder head. The cylinder head is made of metal and has a cylindrical shape with a pointed end and a flat base. The other two images are of a smaller metal cylinder with a flat top and a round base. All three objects are displayed on clear acrylic stands. Below the images, two black labels with Japanese text are written in Japanese.