Plastic Propeller 4" span plastic propeller with 2-mm hole. Works with any miniature motor that has a 2-mm shaft. Note: If you are looking for a 5" propeller please select the product code PROP5. Key Features Measures 10 cm (4 inches) in span Fits miniature motors with 2-mm shaft Product Specifications: Dimensions 4" span Hole Size 2 mm Similar Products RC Airplane Propeller Drone Propellers Toy Boat Propellers Car Propellers Miniature Propellers Note: These are similar products, and each product is different, so research is required to find the best fit for your needs. Perfect for hobbyists and enthusiasts building air propelled boats, cars, and non-flying model airplanes.