Assorted Used Automotive Pulleys and Engine Components

The image displays a collection of what appear to be used automotive engine components, specifically focusing on various pulleys. There are at least three distinct pulley-like items, predominantly made of metal, likely steel or cast iron, given their industrial appearance and visible signs of rust and wear. The dominant colors are various shades of dark grey, black, and reddish-brown due to surface oxidation. Each pulley exhibits a circular form with an inner hub designed for attachment to a shaft. One prominent pulley in the lower left features a central square drive or mounting point, surrounded by a ring of gear teeth or splines, and further secured by what looks like three bolt holes on an outer flat flange. This particular component shows significant surface rust and grime. Another pulley, situated at the top, is darker, possibly painted black, and appears to be part of a larger assembly, with other smaller metal components nested within its central opening. Its surface shows some scuffs and dust, but less severe rust compared to the other. The third visible pulley, on the right, also shows a central splined or geared opening with visible rust and a 'cross' shaped indentation, suggesting a specific tool interface or marking. General visible condition issues include widespread surface rust on all ferrous components, consistent with exposure to moisture and age. There's also accumulated dirt, grease, and general wear and tear indicative of extended use in an engine environment. No obvious cracks or structural damage are immediately discernible, though a detailed inspection would be required. No manufacturer's marks or part numbers are clearly visible in the image. Given their condition and type, these components are likely from a vehicle that has been dismantled or is undergoing repair, indicating a used-parts status. The craftsmanship appears to be typical industrial machining, functional and robust, rather than aesthetically refined. The age is estimated to be late 20th to early 21st century, consistent with generalized automotive components.