This durable aluminum propeller guard protects boaters from harm. Made of tough yet lightweight metal, it fits outboard engines ranging from 9 to 120 horsepower with propeller diameters of 9 to 11 inches. Its sturdy construction shields swimmers and divers in the water from a spinning prop, helping to ensure safe time on the water. The guard mounts easily to the lower drive unit and prop shaft with included hardware. With open sides to avoid restricting water flow, it keeps swimmers and debris safely away from the blades without compromising engine performance. Peace of mind comes standard with this essential boating safety gear. Proper fitting is recommended for use.