One used GCSFlex 2D excavator system. Includes the CB450 display with suction mount, all cables, AS460 body sensor, AS450 boom sensor, LC450 laser and stick sensor and bucket sensor. We traded in a Komatsu PC200 excavator and this was on it. The customer who bought that machine did not need the excavator system. This will work with a laser to carry grade around a job site. We have powered the unit up and all the sensors work. GPS capable. Can be upgraded to work with GPS through a Trimble machine control or Sitech dealer.