This part is CNC cut from 1/16" fibergalss reinforced G-10 stock, and is an exact replacement for the Upper Center Plate that comes in the Next Level 500mm and 650mm Quad Frame kits. This part is pre-drilled with two sets of mounting holes for most of the popular flight controller boards. The inner ring of holes have a 30.5mm square spacing for the OpenPilot CopterControl boards, and the outer ring of holes have a 45mm square spacing for boards such as the KK Copter, MultiWii, Hoverfly Sport, Paris and others.

This part can also be used as a Lower Center Plate if you want want to install the Lower Center Plate as a stand-alone battery mounting plate.