Compatible with MOST iRobot Roomba 500, 600, 700 Vacuum Cleaning Robots, except 645, 655, 675 & 670, 671, 690
There are two types of screw (long with wide head and short with narrow head), both work for our brush. Long screw does not go into the indention of brush, but still can be locked on machine.
DO NOT Work on: 645, 655, 675 & 670, 671, 690, They use 800 series side brush. Please search ASIN B0779KG79Q for compatible brush
Work on the following models: 510 530 532 535 540 545 550 552 560 562 570 580 581 582 585 595 600 620 630 650 660 700 760 770 780 790
INSTALLATION: First place the brush on the machine. Secondly, insert and tighten the screw.