4 PCS BrotherHobby Returner R5 2207 2400KV 4-5S Бесколлекторный мотор для RC FPV Racing Дрон
It is impossible to unlock the screw of 5 motors (so is not common?) to clean/maintenance or whatever.
all good
They ripped!
very reliable motors, crashed few times onto the walls. still survived!!!