APC 11 x 8E Composite Thin Electric Propeller This is an APC 11 x 8E Composite Thin Electric Propeller. APC propellers are CAD-designed and manufactured to be lighter, stronger and produce less noise and more power than typical propellers. APC model airplane propellers have enjoyed strong acceptance and growth since their introduction in 1989. They are especially popular in pattern and racing events. The performance and low noise advantages are largely due to the precision methods Landing Products uses to design and manufacture APC propellers. Specifications: • Length: 11 Inches • Pitch: 8 Inches • Hub Diameter: .80 Inches • Hub Thickness: 0.47 Inches • Shaft Diameter: 1/4 Inch • Weight: 0.92 Ounces • Type: Thin Electric Tractor • Includes Propeller Adapter Ring Set *This is a thin electric propeller. This propeller is designed for use with electric-powered aircraft. It"s not designed for use on glow- or gasoline-powered aircraft.