i've had one of these:



since '95 (American Classic Trilock, with tapered roller bearings) on a bike with about 30-40000 miles on it. good as the day i bought it. a little surprised, that it never really sold that well...

it's secured and adjustable with just a tiny hex wrench. locking principal reverses tradition, in that the "locknut" pushes AWAY from the threaded cup when the (3) setscrews in it are tightened.