This frame is not very good. I have other 3 inch frames and this thing flexes way more than the others. I think it's because of the extra LED groove on the bottom. It seems to weaken the frame considerably. very big, there is only enough space for esc and fc, but it is nice that there are 20mm holes at the back for mounting vtx. I don't like the extra crossbar under the camera. My 19mm camera hangs down so I just made my own mounts. I expect it to break the first time. The two middle rows of shelves are for the Mamba esc. too close to the stack so you have to remove one row and push the others to the exit