Pack of 2 for Enhanced Durability: This dual pack of bearing housings provides a spare ready for use, constructed from durable metal to reduce wear and extend service life. Designed for compatibility with Stihl trimmers, these components help minimize the need for frequent replacements, offering long-term savings. High-Quality Construction: Made from premium metal, these bearing housings are built to resist breakage and degradation. Their robust design supports smooth trimmer operation, contributing to extended equipment lifespan and reducing the need for new purchases. Perfect Compatibility: Specifically engineered to fit Stihl FS38, FS40, FS45, and FS46 models, these bearing housings serve as a direct replacement for part number 4144 640 5900. Designed for precise fitment, they ensure reliable performance and efficient operation. Simple Installation, Prolonged Performance: Installation is easy and straightforward. The package includes necessary lubricants and safety gloves to assist with setup. Regular lubrication supports stable and long-lasting trimmer performance. Essential for Efficient Mowing: These precision-engineered bearing housings help address common trimmer issues such as overheating. By stabilizing operation, they enhance mowing efficiency and support consistent lawn maintenance. Color: Photo Color Material: Metal The actual product may vary slightly in color, which does not affect functionality. Package Contents: 2 x Bearing Housing Note: Lighting and display differences may cause slight color variation. Measurement may vary by +/- 1-3 cm.