Made of material, more durable.HEPA filter is made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer.As part of normal maintenance, it can be easily removed and replacedIt is recommended that you replace spare parts every 2 to 3 months depending on the frequency of use to keep the machine running at its best performanceThe powerful cleaning function makes household cleaning more time-saving and labor-saving. It is suitable for a of floors such as ceramic tiles, marble, and wood floors.Product name:roller brush, filterCompatible models:for D3, for SPEEDFOX Nano NanoProProduct weight:filter screen 35g/pc:12 PcsColour:Black and WhiteMaterial:plasticSize:Filter screen:72x68x56mm Package Contents:12 x Hepa FilterOnly 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin