Real1M 140mm racing drone frame made by Realacc. It is a miniature version of the Real1 that was made a few months ago. I have very high hopes for this one!
https://www.banggood.com/Realacc-Real1M-140mm-3-Inch-CNC-Carbon-Fiber-RC-Drone-FPV-Racing-Frame-Kit-3mm-Vertical-Arm-p-1237257.html?cur_warehouse=CN