Fits Model: For Roborock S50/S51/S55. Main Brush or Cover Accessories For Ecovacs Robot X1 X1S T10 T20 Vacuum Cleaner. Fully fit for the job. 1 Left Drive Wheel. 2 Drive Wheel (Left+Right). Durable, this sensor is made of high quality materials and stands up to the rigors of daily use.
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