Apex 3 is a small frame for building a 3" freestyle drone. The frame uses arms made of 4mm thick carbon, which makes it very durable. The frame is designed for Micro (19mm) size cameras. There is space for a stack with 20x20mm M2 holes in the middle part. In the rear part of the frame there are additional mounting holes with spacing 20x20mm M2 suitable for placing a video transmitter. The frame can accommodate motors with both 9 and 12mm M2 mounting holes.