NAVY 3.0 PROPELLER | EPropulsion Accessories The NAVY 3.0 Propeller is designed to address the shortcoming of the propeller of conventional small power outboards, which usually has a small diameter and high rotational speed due to insufficient torque output of gasoline engines at low speed. The large torque output of the ePropulsion product enables the motors to use a large diameter, low rotational speed propeller, which is much more efficient than conventional propellers. The propeller efficiency is optimized by using a variable-pitch design, which also keeps the propeller in high efficiency at a wider speed range. Two-blade premium fiber-reinforced nylon propeller. 10.2 6.73 inch / 260 171 mm Compatible with Navy 3.0 and Navy 3.0 Pod