Gus, not sure, but don't throw it in for a float test, send it to me! ;) http://www.nikonians.org/html/resources/non-nikon_articles/manfrotto-222-grip-ball-head.html Last sentence is intriguing.
I am about to give this piece of crap the float test in the nearest dam. Any ideas on how to tighten it ? it cant even hold a 30D & 24-105. Oh ...& yes im not talking about the obvious tightening dial...its on max. Anyone opened one up to see if there is adjustment in there at all ?