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 wear. Their durability supports smooth trimmer operation, extending equipment lifespan and reducing the need for 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 easy with these bearing housings. Includes necessary lubricants and safety gloves for quick setup. Regular lubrication helps maintain stable and long-term trimmer performance. Essential for Efficient Mowing: Helps address common trimmer issues such as overheating. These replacement parts stabilize trimmer function, 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 Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3 cm.