Specification Brand GemfanItem Name 2412 3 Blade PropellerMaterial PCPitch 1 2 inchColour Clear Gray Clear BluePropeller Diameter 61mmCenter Thickness 5 8mmCenter Hole Inner Diameter 1mm 1 2mm 1 5mmMax Propeller Width 9 1mmWeight 0 631gRecommended Motor 8520 brushless motor Not Included Package Included 4x 2412 3 blade Propeller CW4x 2412 3 blade Propeller CCW