I could be wrong and that makes sense. Need to look at it closer. I know one came with my old RC18T, so I may dig that manual out and check. Thanks @WickedFog !
Was doing some cleaning/organizing of my pit box to make it easier to carry tools and parts to the track for carpet racing and found four of these little things. They came with my Mini B and my RC18T. Never paid much mind, but am curious if anyone knows what it's for. Thanks!