tool, tools, brass, hardware, fittings, air, shiny, hose, black, reflection, reflections, tool box, metal, threads, work, industry, mechanic, mechanical, mechanics, stainless steel, socket, adjustment, clothing, ribbon, discipline, glistening, skilled worker, cavity, administration, improvement, transformation, body, mixture, hosiery, worker, weaponry, steel, alloy steel, science, person, footwear, craftsman, alloy, machinist, physics
Closeup photo of several different types and sizes of brass quick connect fittings for an air compressor and similar tools or hardware.