iRobot roomba dual mode virtual walls 2 pack

These are the original iRobot brand. Compatible with Roomba® 500, 600, 700, 800, 900, e, i and s Series Robots as well as the Braava M6 and the Scooba 450. These act as “fake walls” to prevent the Roomba or Braava going into an area either as a straight line or as a circular area. These retail for $129.99 plus tax on the iRobot website (see last photo). These are used but in excellent condition Selling them as a 2 pack