Made of high quality material, durable Can be easily removed and replaced as part of normal maintenance. Easy to install and reliable to use The antimicrobial filter traps dust and allergy particles during cleaning, perfect compatible asthmatics, allergy sufferers, or pet households. It is recommended that you replace it every 2-3 months or thereafter to maintain the best per compatiblemance of the machine. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! : Material:Plastic Package Contents: 2 * Main Brush 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.