Luftschraube 11x7. Spritzguß. glasv RActive E-RAM2818 op is finished in a dark blue with light blue tips. The blades are a true aerofoil section, which is computer generated and precision CNC machined. The aerofoil section is continued much closer to the hub than most other propellers to deliver excellent acceleration, plus a good power absorption to noise ratio, and power absorption to thrust ratio.