Counter-clockwise propeller! This series of propellers is characterized by a blade shape designed for maximum performance, an extremely low-noise, glass-fibre reinforced plastic and extremely high stability. The universal bore is made to fit shaft diameters of 3.4.4.5.5.6.8mm with the help of the enclosed reducers and therefore offers a lot of flexibility when selecting the right motor shafts. Max. permissible speed 18,000 rpm.