An ImmersionRC EzUHF 8ch Diversity Rx Antenna Clip.
Clips on between the two Antennas and holds them securely in a 90° angle thus preventing them from falling into the Props.
Those using a regular Discovery PRO instead of the Endurance Variant might want to take a look at the
60° Version to get more clearance between the Props in case of a harsh landing.
Also has a little hole on the bottom to thread a wire through in order to tie it to the Craft while not in use.