Home > Slow Fly Micro > Carbon Fiber Propeller for ButterFly   Carbon Fiber Propeller for ButterFly  S391 : Carbon Fiber Propeller for ButterFly Product Details     3.2" x 3.3" prop for Butterfly. Low Weight Carbon Fiber - Beautiful! Description: Carbon Fiber Propeller as used on the Butterfly or Carbon Butterfly. Weight is 0.2g.