I bought this stock reflector from Phoenix based on its dimensions being the same as the stock reflector on my Sanshin 250 Watt Marine Short Arc searchlight. It turned out to be just different enough that I could not mount it. It has no hub. It would make for a fun Short Arc build. It was off the cardboard packing just long enough to determine it would not work for me. It's free, sort of.....Postage will probably be about $20.