Specification Brand GemfanItem Name 7140 3 Blade PropellerMaterial Glass Fiber NylonPitch 4inchColour BlackPropeller Diameter 180 34mmCenter Thickness 7mmCenter Hole Inner Diameter 5mmMax Propeller Width 22 8mmWeight 9 8gRecommended Motor 2808 1300kv Not Included Package included 2x 7140 3 blade Propeller CW2x 7140 3 blade Propeller CCWOR4x 7140 3 blade Propeller CW4x 7140 3 blade Propeller CCWOR8x 7140 3 blade Propeller CW8x 7140 3 blade Propeller CCW