Our coldhead replacement tool offers a compact design that includes all of the essential components you need to change GE RDK 408A-2 and RDK 408A-3 coldheads. Like the rest of the Kepler Series tools offered, The feedback we have received form our in the field engineers has helped design this tool for effectiveness and efficiency. Well packaged, lightweight and easy to set up, and easy to pack up and transport when you are done with the job.