High quality with excessive durability Replacement force wheel for the damaged, non-working one Help to fix your robot sweeper, and make it work wisely Highly match with the package Applicable Model:for Xiaomi Mijia E10 / B112 / E12 Type:C:1Pair Left & Right Wheel Colour:As Shown Material:Plastic Package Contents: 1pair * wheel assembly Only the above kit content, various item should not included. Note: Light reflection and various exhibits could cause the colour of the item in the picture a piece assorted from the real thing. The dimension allowed error is +/- 1-3cm.