1、The surface has passed through polishing treatment, salt resistance and corrosion resistance, even if exposed to salt water for a long time, the propeller blades will not be damaged, on the contrary, the propeller blades will become smoother and brighter. 2、The propeller blade made of aluminum alloy is equipped with 4pcs sharp blades, and the blade profile receives almost zero resistance when advancing under the water, so it can advance quickly. 3、The joints of the propeller blades are linked by 13pcs spline, which is forged by high‑density pure copper, to better match the engine speed, so that your outboard can move faster on the water. 4、Propeller forged from high‑density aluminum alloy, high strength, bending resistance, not easy to damage, which makes it durable and firm. 5、Easy to use and quick to install, and will not take up much of your time, very convenient.