It immerses impact using a NAVAL brass spindle with a rubber cushioned hub. It is a perfect aluminum replacement boat prop and it provides a holeshot and excellent performance. It is a highly suggested three-blade propeller and is good for recreational boats with 3, 4, and 6 cylinder outboards. Key Features: It has three accurately balanced blades Standard factory-installed rubber hub, no hub kit needed For durability and strength, made of high-quality aluminum alloy Most advised boat applications: Workboats, Aluminum Consoles, Offshore Singles, Ski boats, Walleye Boats, Inflatables, Pontoons, and Family Cruisers Specifications: SKU: 072014 Pitch: 10 inches Weight:2.40 LBS Number of Blades: 3 MATERIAL: Aluminum UPC: 014984003070 Diameter: 10 3/8 inches Dimensions: 17 17 9 in Rotation: Right Hand (RH) Manufacturer: Michigan Wheel Engine: Chrysler, Force, U.S. Marine Splines: Rubber hub bushing 14 spline pin drive Non-thru hub exhaust and 14 splines and pin drive OEM Part number 48-819337A40, Force FO328,48-819337A40, FP274, FP276, AMC-308, FP-278, Force FP366, 48-819337A45, FP278