The AlfaRC Fi-115 is a small 2.5" frame designed primarily for freestyle flying in the garden and in the park. The frame has a bottom plate made of 3mm thick carbon. Combined with the triangle-shaped arms, the frame is stiff and durable. The frame can hold stacks of 25.5x25.5mm, 16x16mm and 20x20mm. Twenty millimeter stacks can even fit two behind each other in the frame, so you can conveniently place a video transmitter in the back. The frame is designed for nano-sized cameras.