General description Brand new high-quality material, well made, and well matched to the equipment. The contents of the accessories are easily removed and replaced as part of routine maintenance. Clean accessories keep your home robot running at its best. To achieve the best cleaning filter effect, the cleaning accessories should be replaced every 2 to 3 months depending on the frequency of use. Additionally, pre-filters can help reduce unpleasant odors from pets, smoke, cooking fumes, and various household products and chemicals. Technical specifications Material: Non-woven fabric Package Contents: 16 x Duster Measurement allowed error: +/- 1-3 cm