Features: Fit for Mercury Mercruiser 40-60HP or Command Thrust, 70-300HP 2-Stroke and 4 Stroke, Force 90-120, Mercury Mercruiser, Alpha, (less than 400HP) Replaces OEM Numbers: 835257Q1 On site repairable: no need to wait on water for rubber hub- replacements work time-. Flo-Torq- hub- systems cushion and protect the drivetrain from most impacts. Easily installation. Specifications: Material:Metal Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Flo-Torq- II Hub- Kit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.