That's some windshield washer hose I had cut into 4 small pieces. I put it on the skids because I got tired of the heli sliding across the floor from Tail Rotor Drift. I was surprised to find that those little rubber feet also absorbed some of the shock from hard landings and the heli no longer makes that "Clack" sound on rough landings. The added grip can increase chance of dynamic rollover, but I haven't had any problems thus far.

I didn't care for the OE antenna set-up so I replaced it with a Micro-Z antenna. You can see it better in the pic. Helihobby stocks it. If your interested [link=http://helihobby.com/html/extras.html]click here[/link].