Solas Rubex 3 Aluminum Interchangeable Hub Propellers (9411-135-15) Interchangeable with Flo-Torq and Vortex system. SOLAS High performance/rubber hub Three-blade aluminum propeller. Exclusive Solas casting process. Wide blade design specifically for 4-stroke engines Excellent acceleration and top speed. Note: Hub not included, must be purchased separately. Line item description: 13.4 x 15 inches. Manufacturer part number: 9411-135-15.