Product description Clean brushes preserve your place robot operating at height performance. We put forward that you clean Roomba 's brushes each 1-3 makes use of (depending upon the quantity of filth and debris on your home). Compatible with: For iRobot Roomba 500 six hundred seven-hundred all sequence ( 500 510 520 527e 527 52708 528 529 530 531 532 535 536 540 550 551 552 555 560 561 563 564 56708 570 580 581 585 595 601 602 610 611 614 620 625 627 630 635 650 651 653 654 655 660 665 670 750 760 761 770 775 765 772 776 780 782 785 786 790 ) Vacuum Cleaning Robots Package Includes: 1 x 3-armed Side Brush for Roomba 500 600 700Series Pre-sale Service: If you interest in any goods in my shop,and have question for those items, simply touch with me!! And if you wish to purchase different items(mix order) in my shop or prefer extra quantity, please contact with me. Thank you very much!! Payment: 1) placing your order, please verify details with us if in case you've got request on items. 2) make charge within three days of order if possible. 3) will just ship the goods to you in step with the handle that you writed in Buydo, if you want to change,you needs to be aware me of it.