[Compatibility] These replacement wheels are compatible with Dreame H12, H13, H20, and M13S models, ideal for replacing the electric axle rollers of your vacuum cleaner. [Materials] Made of plastic, rubber, and metal materials to ensure durability and reliable performance during use. [Improve Cleaning Efficiency] Replacing worn or damaged motorized shaft rollers helps restore smooth operation and improves the overall cleaning performance of the vacuum cleaner. [Extended Service Life] Replacing the electric shaft roller enhances the vacuum cleaner's functionality and extends its service life. Color: Black Material: Plastic + Metal Package Contents: 4 x Replacement Wheels 4 x Locking Pins Note: The package includes only the items listed above. Other products are not included. Note: Due to light reflection and differences in display screens, the color of the item may vary slightly from the images shown. Measurement may vary by +/- 1-3 cm.