http://www.jumpusa.com/p/PROPADAPTER/CW+CCW+Sunnysky+X2208+X2212+X2216+Self+Tightening+Propeller+Prop+Adapter+Set+with+Spinner+Nut+Bullet.html
Self tightening rotor shafts for Sunnysky X2208 X2212 X2216 motors. Beefy 6mm shafts are more robust than the factory 5mm. Silver bullet spinner nuts included. Your motors spinning do all the tightenting. Finally, an easy on - off solution for your drone. They're quick release. All by hand, no tools necessary.
