Comprehensive Compatibility: Designed specifically for X50 Ultra / X50 Master / L50 Pro Ultra / V50 Ultra, this kit ensures a perfect fit and function for your robotic vacuum. Maintenance Recommendations: To maintain optimal, it's advised to clean the regularly and replace every 1-2 months, depending on usage frequency. This routine ensures your vacuum operates at efficiency. Premium Construction: Made with high-grade materials, this part not only promises but also guarantees robust performance under various operating conditions. It's an essential upgrade for anyone looking to maintain their appliance in top condition. Simple Installation Process: designed for hassle-free installation without the need for additional tools. The user-friendly design allows for quick and easy replacement, making maintenance a breeze and saving you time. Model:For X50 Ultra / X50 Master / L50 Pro Ultra / V50 Ultra Function:Cleaning Colour:As Shown Material:plastic Package Contents: 1 pairs * main brushes