I bought this thinking this had the most extended height available out of all the headsets but it turned out I don't have enough space between the top of my frame's head tube and the top of my forks' steerer tube to ever use all the available spacers combined.

That being said though, I was still able to comfortably experiment with diff. bar heights in a cost effective way thanks to this headset. It's important to note though that when experimenting with using more spacers, you want to keep the empty space gap in between the top of the stem piece and the top of the fork tube less than 1/4" (or whatever recommended by your stem's manufacturer) or you might risk your handlebars & stem just popping right off your forks!