Compatibility: The 3831 brush and filter replacement parts are only fit for Hard Floor Expert 3831. Please check your vacuum cleaner model before purchase 3831 Replacement Brush: The 3831 replacement brush is made of microfiber material with , which can clean sealed hardwood floors such as tiles, laminates, hardwood, linoleum, and more Filter 3831: The 3831 replacement filter can effectively capture dust, debris, and particles as small as 0.3 microns. Our 3831 filter just needs to be rinsed with a mild cleaner in warm water and allowed to air dry completely before replacement It is recommended to replace the 3831 replacement parts every 3 months to keep the 3831 -Wave hard floor expert vacuum working at its excellent performance Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:plastic Package Contents: 2 x roller brushes 4 x filters Only 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.