Pack of 2 for Enhanced Durability: This dual pack bearing housing 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 time and cost efficiency. High-Quality Construction: Made from premium metal, these bearing housings are built to withstand wear and damage, supporting smooth trimmer operation and contributing to a longer tool lifespan. Perfect Compatibility: Specifically engineered to fit Stihl FS38, FS40, FS45, and FS46 models, these bearing housings replace part number 4144 640 5900. Designed for precise fitment, they support reliable performance and efficient trimming operation. Simple Installation, Prolonged Performance: These bearing housings feature easy installation. Lubricants and safety gloves are included to assist with setup. Regular lubrication supports consistent and durable trimmer function. Essential for Efficient Mowing: These precision-engineered bearing housings help address common trimmer issues such as overheating. They promote stable operation, improving mowing performance and supporting consistent lawn maintenance. Color: Photo Color Material: Metal The actual product may vary slightly in color, which does not affect functionality. Package Contents: 2x bearing housing Only the listed items are included; other accessories are not part of the package. Note: Lighting and display differences may cause slight variations in color appearance. Measurement may vary by +/- 1-3 cm.