High quality and great durability Replacement drive wheel for the damaged and non-working one Help repair your sweeping robot and make it work properly Very well matched to the equipment Applicable model: for E10 / B112 / E12 Type: C: 1 pair of left and right wheels Color: as shown Material: Plastic Package Contents: 1 pair * wheel set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.