March 2011: ... four months later after daily use: the stool fulfills its task still properly!
June 2012: After more daily use of stool is still absolutely fine - rolled, not shaking, no wear and tear!
August 2013: The stool is still in daily use and I continue to report only positive things. From time to time (approximately every 6 months), I prefer the Allen screws according to which the seat is attached - but rather a prophylactic, because usually only a little loose. Otherwise, he still rolls as at the beginning and shows no signs of wear.