I still got one sitting in it's wooden box but have a couple of the 9mm qr ones on my Specializeds, they do tighten up the front end especially on my SID's as I'm about 100kg and like to get over the front end and work the suspension. Never had any problems with the cartridge bearings so far just got problems trying to get the freehub off the rear one I have, maybe time to get some Plusgas on the job.