These are the 140 mm Quad X Scarab frame plates which allow a Quad v1 to be upgraded to v2 - to carry a GoProHeroHDv2 camera - as per the Scarab Stealth Reconn. these are 2mm Mil spec FR4 G10 plates.
They are compatible with both the v1 boom holders and the v2 boomholders.
Centre holes standard 45mm square spacing for CPU/IMU
1 x Frame plate 140x110mm
Requires Scarab frame hardware sold on this site separately