M3 M5 Nut Screw Wrench Quick Release Propeller Motor Tool for RC Drone FPV Racing Introducation: With the one way bearing, there is no more hassle when tightening or loosening the M5 self lock motor nut. All you need to do is to keep tightening till it's done. Moreover, lengthen socket will protect your fingers against the nut or sharp of the prop. Specificaiton: Item Name: M3 & M5 Screw Nut Wrench 1.5mm 2.0mm screw Color: Black Application: Quick Release M3 & M5 Propeller Motor Nut