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 withstand wear and resist damage. Their robust design supports smooth trimmer operation and contributes to a longer tool lifespan. Perfect Compatibility: 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 support reliable performance during trimming tasks. Simple Installation, Prolonged Performance: These bearing housings feature easy installation. Lubricants are recommended for optimal function. Regular maintenance with lubrication supports consistent and reliable trimmer operation. Essential for Efficient Mowing: Help prevent common trimmer issues such as overheating with these precisely designed bearing housings. These replacement parts contribute to stable trimmer performance, improving mowing efficiency and supporting a well-kept lawn. Color: As shown in photo Material: Metal The actual product may vary slightly in color due to lighting and screen differences, which does not affect functionality. Package Contents: 2 x Bearing Housing Note: The package includes only the items listed above. Lighting and display settings may cause slight color variations. Measurement may vary by +/- 1-3 cm.