It is an excellent aluminum replacement boat prop. It immerses impact using a NAVAL brass spindle with a rubber cushioned hub. It has horsepower Force 75-140 HP single exhaust lower unit. Key Features: It has three accurately balanced blades Definitive factory-installed rubber hub, no hub kit needed For durability and strength, it is produced high-quality aluminum alloy Most advised boat applications: Workboats, Ski boats, Aluminum Consoles, Offshore Singles, Walleye Boats, Inflatables, Pontoons, and Family Cruisers Specifications: SKU: 072107 Pitch: 7 inches Weight: 9.68 LBS Materials: Aluminum UPC: 014984003315 Number of Blades: 3 Diameter: 13 1/4 inches Rotation: Right hand (RH) Make: Force boat propellers Manufacturer: Michigan Wheel Dimensions: 17 17 9 inches Non-thru hub exhaust and fifteen spline Hub kit: not required, rubber pressed in a hub Splines: Rubber hub bushing fifteen spline Fits: Chrysler, Force, U.S marine three-blade aluminum prop 75-140 HP OEM Part Number: Force FP523 Force FPS523 Force FP623 SPC-180 FPS623