equipment for the exterior installation at locations having gasoline dispensing facilities, namely metal pipe fittings; metal manholes and metal manhole covers; metal caps, metal adapters, and metal pipe plugs therefor; metal fill boxes; metal vapor vents; metal fuel line strainers; metal clamps; hand-operated hose retrievers and hose retractors made primarily of metal; fuel identification markers made of metal; metal drop tubes; and metal spill containment apparatus