Features: Specifically designed for EXVAC660/X500Pro robotic vacuum cleaners, this wheel set ensures a perfec fit and excellent performances. Crafted with quality plastic, these wheels are resistant to wear and tear, ensuring a lifespan and stable operations. Designed for busy professionals who want to enjoy automated cleaning while dealing with their demanding work schedules. Suitable for various home surfaces like living rooms, bedrooms, and kitchens, providing a clean and organized environment. With precise control and flexible design, these wheels allow the robotic vacuum cleaner to move smoothlys, delivering comprehensive cleaning results. Specifications: Texture: Plastic Applicable Model: For EXVAC660/X500Pro Size: Approx. 4.25x3.74inch(10.8x9.5cm) Package Includes: 1 Pair Drive Wheels note: Please allow 1-2cm errors due to manual measurement. Please make sure you donot mind before order. Due to the differences between different monitors, the picture may not reflect the actual color from the item.