General description Replacement Main Brush Mop Cloth for Proscenic 850T Robotic Vacuum Cleaner is a brand new, high-quality accessory designed to enhance the performance of your robotic vacuum. Made from durable materials, this replacement part ensures a long service life and is perfectly matched with the equipment for optimal functionality. Technical specifications Color: as shown Material: plastic Package Contents: 2 x Main Brush, 6 x Cleaning Cloth Measurement allowed error: +/- 1-3 cm Usage It is recommended to replace the spare parts every 2 to 3 months to maintain the best performance of the machine.