here comes a Propeller Nut Wrench tool for your quad or other things.
Use it as a T-wrench or if the nut is really tough as a normal wrench.
Print it with more than about 60% infill so that it is strong enough. I printed it in PLA with 60% and it came out fine.
Give me a like if you use it and have fun ;)
no commercial use !
UPDATED VERSION !
-scaled up for 1.01 so more nuts will lock better in,no matter if they are +-0.5% to big or small
-added a Number on it