nidici M5 Prop Nut Lock Nuts for 2205-2506 Brushless Motor for RC FPV Racing Drone (10xCW,10xCCW) Made of aluminum alloy,nylon Insert,light weight and ideal for prop mounts on your motors Motor lock nuts,Compatible with motors 2205-2506 brushless motor Like as iPower motor 1407 1606 ion 2205 2207 brushless motor, Emax RS2205 RS2306 Pack list: 20 x m5 lock nut.(10xCW black,10xCCW red)