Looks like they took a 5 inch frame and added longer arms. As a result, a 7 inch prop will likely appear in the video frame. The top and bottom plates are disproportionately short, as if they were meant for a 5-inch frame. The holes for the compression nuts are not countersunk, so the surface of the compression nuts is about a millimeter higher than the surface they hold. .For a cheap frame I find it almost tolerable, but I wouldn't buy it again.