The lighting system arrived with minor scratches on the main bar which appears to be a thin metal spray on top of plastic.  The hanging arms (stubs from ceiling to rail) are plastic.  Not worthy of a dining room fixture or worth the price paid.  The small lamps appear to be reasonable.

Overall disappointed in the quality of the track lighting parts.  I have not hung it up since I will most likely return.  The idea or basic design is appealing for an elongated table lighting fixture but fails in quality of parts.