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 degradation. Their durability supports smooth trimmer operation, extending its lifespan and reducing the need for costly replacements. 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, they ensure reliable performance and efficient trimming operation. Simple Installation, Prolonged Performance: Installation is straightforward. Includes lubricants and safety gloves for quick setup. Regular lubrication supports stable, long-term trimmer operation. Essential for Efficient Mowing: Helps address common trimmer issues such as overheating. These replacements stabilize trimmer function, improving mowing efficiency and supporting consistent lawn maintenance. Color: As shown in photo Material: Metal The actual product may vary slightly in color, which does not affect functionality. Package Contents: 2 x Bearing Housing Only the items listed are included; other products are not. Note: Lighting and display differences may cause slight color variations. Measurement may vary by +/- 1-3 cm.