MASTER AIRSCREW 9 X 7 SCIMITAR S2 SERIESFeatures a scimitar-shaped blade with swept tips and under-cambered blades. Provide great speed, thrust and noise suppression. Perfect for high performance models. Made of Glass Fiber Reinforced Composite. Available in sizes 6" to 16". Propeller diameter 9" / 229mm Propeller pitch 7" / 178mm Hub thickness 7/16" / 11.1mm Shaft diameter 1/4" - 5/16" / 6.35mm - 7.94mm * Propeller Weight 0.56oz / 15.9g Direction of rotation Normal / Tractor Material Glass Fiber R Composite Color Black