Turbo cooling fan from spare quadcopter parts #3DThursday #3DPrinting
Mounting holes should take any similar motor, they are the same as in 250 quadcopter frame. 7mm hole in the handle is for chinese servo tester ...
from Google Alert - quadcopter http://j.mp/2zmNnYW
via Tommy Gerlado
http://www.tommygerlado.com/2018/09/turbo-cooling-fan-from-spare-quadcopter.html