This is a Master Airscrew "Scimitar" Prop which is Made of Lightweight,Glass-Filled Nylon.

FEATURES: Scimitar Props resemble a "Scimitar Sword" in that they are curved on one side and flat on the other. The Latest in Engineering Technology used for this Updated Design. Lower Noise and Accurate Balance Available in a Wide Array of Sizes to Suit Every Application. Black in color Propeller is totally fuel-proof.

INCLUDES: One 12x6 Glass-Filled Scimitar Nylon Propeller

SPECS: Center Hole Diameter: 3/16" approx. Propeller Diameter: 12" Propeller Pitch: 6"

REQUIRES: Depending on the engine crankshaft size, the propeller may need to be reamed to a larger sizeCOMMENTS: Four-stroke engines are typically higher torque engines and should use the larger props indicated in the range. Recommended prop ranges will vary depending on your particular engine and airplane.