Original black single-color front wheel. It can only be used in iRobot Roomba without motion sensor.
Roomba robots that have motion sensor under the wheel, need two-color wheel, black and white.
This wheel can only be used with Roombas that do not have a motion sensor.
All models of iRobot Roomba, E Series, i Series, S Series. Some 600 and 800 Series models (No motion sensor).
For example, 616, 606, 680, 676, 675, i7, e5, s.