border mark, magnetic strip Function: Replace the magnetic strip of the vacuum cleaner robot digital magnetic strip wall isolation partition cleaning Colour:black Material:Silica gel Size:2M Package Contents: 1 * Boundary strip Only the above package content, other products aren't included. Note: Light reflection and diverse exhibits may cause the colour of the item in the photo somewhat diversified from the real thing. The length allowed error is +/- 1-3cm.