Hmm…I see a sprocket and an IFI traction wheel…So my guess is some sort of “ball handling” mechanism. 
My guess is that it is some sort of guard around the bottom of the robot to keep balls out.
You’re going to demo at the VMA’s this year?
wish I knew…
see you in Fla!
I’m gonna let you finish… But Team 100 had one of the best teasers of all time…
let me guess, it is a drive wheel at the left end of the drivetrain