Hardware used to mount the EHU’s to the element bracket, cover/lid, and/or DB mounting plate. 20m Old-Style used to mount the cover/lid for gray/green rectangular housings. DB plate style used to mount the EHU to the DB mounting plate with alignment gasket. New 40m style used to mount the cover/lid for all new style housings (black) and 40m green style housings. *Picture shown is a general picture of the mounting hardware and may not resemble the exact components in the kit you order.