1. Material: plastic
2. Applicable area: 51-100 square meters
3. Suitable for iRobot roomba 8/9 series
4. High adaptability to real machines and strong practicality
5. Sturdy and durable, not easily damaged
6. Clean and sweep, long service life
7. Size: main brush 190 x 55 x 32mm, filter 110 x 55 x 13mm