This is an antenna protector for the Eachine Lizard95 quadcopter. I did a quick fly of my quad when I got it, and promptly crashed it into the floor, breaking the carbon fibre antenna protector. I drew up a similar one in Sketchup in five minutes, and 16 minutes of printing later, I installed them on to my quad. Saves me breaking the antennas! I'd rather break the replaceable plastic part instead.