TBS Source One V5 7" is a frame that was created as an open source community project initiated by TBS. The drawings of the frame are thus publicly available for free use. You can find them here.
This is a 7" variant of the popular freestyle frame. The drone has arms in a deadcat arrangement, where the front arms are moved further back to minimize propellers in the image. The frame can be built with both analog and digital (Caddx Vista, Walksnail Avatar) video transmission. The frame features 6mm thick arms.