That is your middle shell $30, the lower shell is the gray part with camera, top shell is the one with all the stuff, there are 2 nice videos on youtube about dissassembly, I hit a tree branch and replaced leg, middle shell, it was fairly easy, just pay close attention to videos and it is EZPZ, I got middle shell and legs, and repaired it perfectly, took bout 3hrs as I took my time, all done within 10days of accident, cost total 110$ with new electronic screwdriver kit and soddering Iron(didn't use it, just nice to have easy to use), get to know the parts of your P4P, can be totally assembled from parts ordered online, gives you confidence, nice drone. Heres some pics of repair. It flys perfect, lucky camera wasn't damaged $$$$, one of my compasses doesn't work so I ordered a power interface module($40) and may replace it, thats ware the 2 wires from L/R compasses in legs plug into as well as the 4 L/R main power wires from battery to motors (thus the sodder iron), but really don't have to replace as compasses are just redundant(backups) and flies fine with one, good luck, God bless