The Michigan Match 15 X 17 A3R PROP WIDE BLADE propeller has a NAVAL brass spindle with a rubber-padded hub that absorbs impact and preserves the propeller. Shifting gears causes a lot of tension. Under severe impact, the rubber bushing is engineered to spin free, lowering the risk of unit damage. Powder coating has been improved, and the bushing has been beefed up. APPLICATIONS: For Nissan Tohatsu 115 - 250 Horse Power: 4.75 Gearcase with 15 tooth spline 2014 - NEWER BFT115 2014 - NEWER BFT 150 2014 - NEWER BFT200 2014 - NEWER BFT225 2014 - NEWER BFT250 Key features: Rubber Bushing MICHIGAN MATCH Hub System Specifications: 15 x 17 Cupped RH 3 Blade Aluminum Diameter: 15 Pitch: 17 Rotation: Right-Hand Number of Blades: 3 Material: Aluminum Engine type: Mercury, Mariner, MerCruiser Number of Splines: 15 tooth Hub kit: Not necessary (Rubber pressed in the hub)