Superior Construction: These replacement wheels for X50 Ultra/X50 pro/X50 Master/ V50 Ultra robot vacuum cleaners durability and reliable performance. Their exquisite craftsmanship ensures a and proper operation with your device. Easy Installation: These wheels have a simple design and can be quickly installed without any tools. They are quiet in operation and improve your living environment by reducing noise levels, making them an ideal choice for any home environment. Best Compatibility: These pulley replacement accessories are designed specifically for X50 Ultra/X50 pro/X50 Master/ V50 Ultra models and can seamlessly replace the parts, ensuring that your vacuum cleaner runs smoothly without any compatibility issues. Enhanced Mobility: These wheels can easily overcome common household obstacles such as cables and thresholds, allowing you to navigate with ease. Its advanced design allows your robot vacuum cleaner to move freely, thereby improving its cleaning efficiency. and Stable: These wheels are not only wear-, but also have an anti-slip design to improve grip on different surfaces. This stability helps prevent sliding, making the movement of your robot vacuum cleaner and more efficient. Specification:Left+Right Color: As shown Material: plastic Package Contents: 2 x Wheel Assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.