[Application]: Use for MERCURY / MARINER 135 - 250 VERADO 200 - 300 120 - 375 ALPHA AND ONE STERNDRIVES ALSO / MAR 75 1984 AND NEWER VERADO 135 - 200 Fury, Plus, Plus, 4, I & Propellers. (Attention: Not compatible with Verado engines with 1.25 inch prop shafts.) [Function]: Designed to protect the transmission system during maintenance and parts replacement. Provides buffering and protection against shocks to the transmission system. [Advantages]: Soft-Shift rubber hub kit helps reduce shifting noise and propeller rattle, delivering quieter and smoother power transfer from the engine to the propeller. Color: Black Material: Metal Package Contents: 1 x II Hub Kit Note: The package includes only the items listed. Other products are not included. Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.