This was designed to be 250 mm and be able to fit a GoPro and 6 inch props! If you don't want to spend 150$ on carbon fibre frame for quadcopter, you can print your own (ofcourse if you have a printer). This was printed for M3 screws and holes are for Naze32. Leave comments, let me know what you like and what has to be changed, and happy flying. :) My electronics list: Naze32 acro rev5 (Cleanflight 1.9.0) SunnySky 2204 2300kv motors DYS BL20A Mini 20A BLHeli ESC OPTO 2-4s Gemfan 6045 Turnigy nanoTech 1000mAh 45-90C FrSky Taranis X9D transmitter FrSky X8R receiver SkyZone TS5823 5.8GHz 32CH A/V 200mW Mini FPV Transmitter (v2) Super Simple Mini OSD System for FPV Hobbyking Multi-Rotor Power Distribution Board (DIY 8 x output PCB) SkyZone 5.8GHz 8CH Diversity A/V Receiver w/Dual Output Hobbywing 3A UBEC 5V 6V Switch Mode BEC For RC Models HD Wing camera from hobbyking (don't buy it, it sucks) Print, crash, print, crash....