|Yeah - the plate (down on the bench) has a notch to go around the strut tube, and slips underneath the lower cup for the spring. We used a bit of bailing wire to hold it in place. Put a floor jack under the other end and slowly jack it up. this will compress the spring and lift the bottom of the strut out of the control arm. On mk4's, and specifically the passenger side, this is a PITA and takes the most time/energy. With this tool, you can be done in just a few minutes vs. 30 minutes or so...
My buddy built that in about the time it normally takes to do the job on one side, and that was after fighting with a conventional spring compressor for a while. Our jaws dropped at how effective/easy it was, and it's been used on well over a dozen suspension jobs by now without issue [IMG]http://*****************.com/smile/emthup.gif[/IMG]
We also used it on a mk3, FWIW. I don't know about use on other models, but it's really simple and effective.