This ring adds 5 threaded 1/4"-20 mounting holes to the EMWL relay lens (3 lower and 2 upper points). 2 holes can be used as attachement for the provided low profile mini bipod for added stability. The two upper holes can accomodate for the 2 included ball joints. The ring is made of made of graphite filled plastic for high mechanical resistance. All holes have Flex-arm footprints and are therefore compatible with their connectors.