I bought this to make a 12.5" sonotube. It has never been used and is in like new condition. I have since changed directions and am purchasing an astrosystems telekit. I no longer need this so it is up for sale. I also have an astro systems spider, 2.6" seconday holder, and discovery seconday I may be selling - if interested let me know.
This cell fits nicely into a 14" ID tube. $125 shipped.