EMX-2236 with Propeller is a 4-pcs set of two clockwise (CW) and two counter-clockwise (CCW) propellers in high quality nylon plastics materials. It comes with 4 blades and a diameter of 1.57 inches. These propellers are finely balanced for smooth and vibration-free operation and are manufactured by EMAX. They are perfect for multicopters, small fixed-wing UAVs, boats, and other special applications that require a 4-bladed propeller. These propellers are both lightweight and durable, enabling you to get longer flight times.