Left.JAPAN BUILT. Right.JAPAN BUILT. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Blind Spot Detection System Warning Sensor. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Cruise Control Distance Sensor. Nut to secure bumper cover. Detection System Warning. radar. Bumper Cover. Cruise Control. Mount bracket.