[Fit Models] The replacement parts kit compatible with for Shark AV2501S AV2501AE RV2502AE RV2520AOUS AV2510AOUS AV2511AE AV2510SOUS RV2610WA AV2610WA RV2520AFUS AV2610BFUS Vacuum Cleaner. [Advanced Technology] Our filters have strong filtering capabilities to capture small particles such as food, hair and pet dander. Replace filters frequently to extend the service life of your Robot. [Easy To Use] All are made of high quality materials. Easy to install and replace, no need other tools. [Replace Tips] Please clean the filter frequently, replace the filter every 2-4 months to keep the vacuum working with high-performance. If you find that your robot is noisy or doesn't work, please kindly check whether the rolling brush is stuck due to not cleaning hairs for a long time. Please note:the physical slightly color difference or difference, does not affect the use,Please don't mind, thanks! Colour:As Shown Material:Plastic Package Contents: 4 * foam filter kits 2 * black 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.