This ring adds 3 lower threaded 1/4"-20 mounting holes plus 2 upper M6 holes to the EMWL relay lens. All holes have Inon Z-footprint. 2 holes can be used as attachement for the provided low profile mini bipod for added stability.  The ring is made of made of graphite filled plastic for high mechanical resistance. This ring system can work on its own (an upper ring is provided) or used with the upper mounting points (EOC-U14-EMWL or EOC-UM6-EMWL).