Assorted Pneumatic Air Line Fittings and Manifold Blocks

This box contains a miscellaneous assortment of pneumatic fittings and components, appearing to be primarily for air systems. The items include several rectangular silver-colored metal blocks that are likely manifold blocks or distribution units, each featuring multiple threaded ports for connecting hoses or other components. These blocks show a clean, machined finish, suggesting they are made of aluminum or a similar light, non-corrosive metal. They have a satin appearance, indicative of a brushed or anodized finish, and some exhibit visible screw holes for mounting. Also present are numerous black plastic elbow fittings, distinguished by bright blue plastic rings at their connection points. These are push-to-connect fittings, designed for quick and easy hose insertion and removal. Their condition appears good, with no obvious cracks or severe wear on the plastic components. Furthermore, there are several brass-colored fittings, including what looks like quick-disconnect couplers and possibly some threaded adapters. These brass components show some minor discoloration or patina, consistent with age or light use, but no significant damage like deformation or heavy corrosion is readily apparent. One blue plastic tool or component with a clear cover is also visible, though its exact function isn't entirely clear. The overall collection suggests a range of components used in pneumatic systems, likely for manufacturing, automation, or workshop applications. The mix of materials (aluminum/metal, plastic, brass) indicates various functions and pressure ratings. There are no clear manufacturer's marks visible in the provided image, but the quality of machining on the metal blocks and the consistent design of the plastic fittings suggest commercially produced items. The items appear to be in used but functional condition, with typical signs of handling and storage in a work environment.