Attributes of Gem-Fan 9045 Propeller CCW Specification: Size: 9 * 4.5inch Material: Nylon Brand: Gem-Fan Very Strong and Lightweight Diameter of center hole: 8.0mm Package Included: 1 CCW propeller Description: With hundreds of thousands of sets sold each month, the Gem-Fan props have been the most successful props the industry has ever seen. The CCW…