Pack of 2 for Enhanced Durability: Our dual pack bearing housing ensures you have a spare ready, crafted from robust metal for reduced wear and extended life. Compatible with Stihl trimmers, these parts help prevent frequent replacements, saving time and money. High-Quality Construction: Made from premium metal, these bearing housings are built to last, resisting breakage and decay. Their durability helps ensure smooth trimmer operation and extends equipment lifespan. Perfect Compatibility: Designed to fit Stihl FS38, FS40, FS45, and FS46 models, these bearing housings replace part number 4144 640 5900. Engineered for a precise fit to support optimal performance. Simple Installation, Prolonged Performance: Installation is straightforward. Includes necessary lubricants and safety gloves for quick setup. Regular lubrication supports stable, long-term trimmer operation. Essential for Efficient Mowing: Helps resolve common trimmer issues such as overheating. These replacements stabilize operation, improving mowing efficiency and supporting consistent lawn maintenance. Color: As shown in photo Material: Metal Note: The actual product may vary slightly in color, which does not affect functionality. Package Contents: 2 x Bearing Housing Package includes only the items listed above; other products are not included. Note: Lighting and display settings may cause slight color variations. Measurement may vary by +/- 1-3 cm.