General description Replacement parts for NV800, NV680, UV810, HV380, and HV382 robot sweepers, made from new, high-quality materials. These accessories are designed to keep your home robot performing at its best by reducing the infiltration of dust, pollen, and other allergens into the air. Technical specifications Material: Plastic Package Contents: 2 x roller brushes, 2 x filters, 2 sets x filter cotton Measurement allowed error: +/- 1-3 cm Usage To maintain optimal cleaning performance, it is recommended to replace the cleaning accessories every 2-3 months, depending on usage frequency. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.