Number of arms: 6 Weight: approx. 25 g Colour: white Compatible with the following device models: iRobot Roomba 555 iRobot Roomba 581 iRobot Roomba 560 iRobot Roomba 580 iRobot Roomba 562 iRobot Roomba 570 iRobot Roomba 563 iRobot Roomba 550 iRobot Roomba 565 iRobot Roomba 564 iRobot Roomba 590 .
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