Compatibility: The 3831 brush and filter replacement parts are compatible only with the CrossWave Hard Floor Expert 3831. Please verify your vacuum model before purchasing. 3831 Replacement Brush: Made of high-quality materials, this replacement brush effectively cleans sealed hardwood floors, tiles, laminates, hardwood, linoleum, and other hard surfaces. Filter 3831: The replacement filter captures dust, debris, and particles as small as 0.3 microns. It can be rinsed with a mild cleaner in warm water and air-dried completely before reuse. It is recommended to replace the 3831 brush and filter every 3 months to maintain optimal performance of the 3831 CrossWave Hard Floor Expert vacuum. Please note: Slight color variations due to lighting or display differences may occur and do not affect product functionality. Color: As shown in photo Material: Plastic Package Contents: 3 x 3831 brush rolls 3 x 3831 filters Note: Other items not included. Light reflection and screen settings may cause slight color differences from the actual product. Measurement may vary by +/- 1-3 cm.