Engineered to meet the needs of performance-driven boaters, Solas propellers deliver peak characteristics to a wide range of applications. Solas Aluminum Props are squeeze-casted to make them stronger and easier to repair than any other prop. Pressed rubber hub provides for long-lasting consistency. Mercury/Mariner/Mercruiser Applications135 hp '87 thru150 hp '78 thru175 hp '78 thru200 hp '78 thru220 hp '87-'88225 hp all years250 hp '94 thru275 hp '90-'94300 hp '83, '99 thru3.4 L '84-'86Mercruiser: Alpha One, Alpha One Gen 2, Bravo One Pressed rubber hub for consistency 15.5 dia. x 17 pitch RH | 3-Blade Propeller, Pressed Rubber Hub / Aluminum, 15.5 dia x 17 pitch, RH