BIELA carbon fibre airscrews are manufactured exclusively from high-quality raw materials. Particularly precise moulds and expert manufacturing enable very accurate balancing and thus exceptional engine smoothness. Front side white with red blade tips, rear side black, as often on original aircraft. Therefore very true to the original! Semi-Scale Props are specially made for certain aircraft types and give the model the final touch for a perfect look. The "Sport" series has been specially developed for the needs of aerobatics and has approx. 10% better efficiency with reduced noise development at the same time. 3-21X10-R-WR.