This is a refurbished iRobot Scooba 5800 Robotic Floor Cleaner Replacement Part Brush Wheel Assembly. It has been slightly used but has been cleaned and looks new. It is about 12 3/4" long. It includes all what you see, the brush, the housing for the brush and the squeegee in front. It should fit these other Scooba models: 5900, 350 380 390 335 6050 340 330 385 but NOT these models: 230 450. Please check the photos with your brush to ensure it is the correct size for I have a no return policy. Happy cleaning!