I searched far and wide for suitable mounting hardware for our high quality copper fixtures that would provide longevity in harsh environments. I found none so we started manufacturing our own. These solid brass mounting parts consisting of a 1/8 IPS threaded brass crossbar, nipple, ground screw and cap nut will last. They'll stand up well to saltwater air and wet climes. Certainly a prudent investment for your lighting. My motto: Do it once correctly and done!