Features: Quality Build: Constructed from rustproof metal, this trailer bearing lubrication tool offer toughness and resistance to wear, ensuring safe operations in various setting without corrosions. Standard Compatibility: Each bearing 2.441inches in diameter, matching common trailer bearing size for easy replacement or upgrades. Protective Cover: Equipped with a cover to prevent dust, moisture, and other debris from entering the bearing, improving service life and reducing maintenance requirements. Easy Lubrication: Includes a dedicated lubrication point for simple application, ensuring the bearing stays well-lubricated and functions smoothly. Strong Support: Engineered with added strength to accommodate trailers of different weights, ensuring safe and stable cargo transportation. Specifications: Component: Stainless Steel + Silicone Diameter:2.441inches Package Includes: 4Pcs Trailer Bearing Grease Cover note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.