MASTER AIRSCREW 3 BLADE PUSHER PROP 7 X 43-Blade Propellers for Model R/C Airplanes 3 blade model airplane propellers specially developed for the most demanding hobby professionals. Great performance and scale look both for electric motors and glow engines. Carefully crafted from Glass Fiber Reinforced Composite. Available in sizes 5" to 16". Propeller diameter 7" / 178mm Propeller pitch 4" / 102mm Hub thickness 5/16" / 7.9mm Shaft diameter 1/4" / 6.35mm ** Propeller Weight 0.39oz / 11.1g Direction of rotation Reverse / Pusher Material Glass Fiber R Composite Color Black