Construction Made from a high-quality aluminum alloy, this tool delivers durable, stable performance. The rugged material stands up to demanding conditions to maintain reliable operation. Compatibility Replaces OEM part 91-78310 and is designed for Mercruiser boats. A practical accessory that supports routine maintenance and repairs. User-friendly design Ergonomic design and straightforward use ensure easy handling. The tool minimizes effort during operation and simplifies installation and removal tasks. Quality control Built to standard specifications and subjected to strict factory quality control processes. You can rely on consistent, high-quality performance. Applications - Mercruiser outdrive hinge pin service, including removal and installation during maintenance. - General hinge pin maintenance on Mercruiser boats, such as accessing hatch or access panels. - Field repairs where hinge pins are seized or difficult to remove, enabling easier and safer service.