This is an add on flight deck for a mini quad frame, it has the mounts for the Spanky frame. There are two versions of the main piece, one has slots for rubber mounts for Flight controller and other one has the normal 30mm mount holes. Also there is the FPC board mount it uses a 9 gram servo to tilt the camera. The area between the camera and the flight controller mount has to rails systems. One fits the minim OSD board and the other is for a bluetooth board. Also there is a small hole on the side to fit a switch 4mm x 9mm they sell them at RadioShack, had one that came in an Arduino kit. I use the switch to on the receive wire to switch between the OSD and the Bluetooth.