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 deterioration. Their durability supports smooth trimmer operation, extending its lifespan and reducing the need for costly replacements. Perfect Compatibility: Specifically designed to fit Stihl FS38, FS40, FS45, and FS46 models, our bearing housings replace part number 4144 640 5900. They are engineered for a precise fit, ensuring reliable performance and efficiency during use. Simple Installation, Prolonged Performance: Installation is straightforward. Includes necessary lubricants and safety gloves for quick setup. Regular lubrication helps ensure stable, long-term trimmer operation. Essential for Efficient Mowing: Helps address common trimmer issues such as overheating. These replacements help stabilize trimmer performance, improving mowing efficiency and supporting consistent lawn maintenance. Color: As shown in photo Material: Metal The actual product may have slight color variations due to lighting and screen differences, which do not affect functionality. Package Contents: 2 x bearing housing Only the items listed are included; other accessories are not. Note: Slight color variation may occur due to lighting and display settings. Measurement may vary by +/- 1-3 cm.