Never used - just stored some throwline in it and brought it along in the truck as a backup. For storing & deploying arborist / tree climber throwlines & throwbags. These go for $125 plus tax. I think they're worth it over the cheaper ones - they seem to open more dependably and keep tangles down... https://www.arboristsupply.ca/product/falteimer-folding-cube/2779