Biela carbon fiber propellers are made exclusively from high-quality raw materials. Particularly precise shapes and expert manufacturing allow for very accurate balancing, resulting in an exceptional running culture of the motor. Semi-scale props have been specifically designed for certain aircraft models and give the model the final touch for a perfect appearance. The "Sport" series has been developed specifically for the needs of aerobatics and offers approximately 10% better efficiency while simultaneously reducing noise levels. 3-27X12-R-WR.