Specification:Item Type: Main Brushmaterial: Absweight: Approx. 55G / 1.9Ozproduct Length: Approx. 18Cm / 7.1Incompatible: Fit For Deebot 0Zm0 930 (900 M88 M87) M80 Sweeping Robotpackage List: 1 X Main Brushnote: Please Allow 0?1 Inch Error Due To Manual Measurement. Thanks For Your Understanding.