MZY LLC 5 x Side Brush 6-armed & 5 x Screw for iRobot Roomba 500 600 700 Series 530 540 550 560 570 580 650 760 770 780 Vacuum Cleaning Robots MODEL:Compatible with all iRobot Roomba 500 505 510 520 521 530 531 532 533 534 535 536 540 545 550 552 555 560 561 562 563 564 565 570 580 581 585 587 589 595 600 605 610 615 616 620 621 625 630 631 632 639 650 651 660 670 680 681 700 720 750 760 765 770 772 772 . Package Including: 5x 6-arm side brush, 5x screw Advantages: These side brushes are easy to remove and replace as part of routine maintenance. To make your home more cleaner,more comfortable. SUGGESTION: Roomba vacuum parts should be replaced every 2 - 3 months to keep your Roomba operating at peak performance 100% MONEY-BACK GUARANTEE: MZY LLC are backed by 100% guarantee that you are fully satisfied with your product or get your money back.