Originally Posted by
lungimsam
I have quick releases with levers that lock.
No tools necessary. They look and are just like QR's, but they lock when the bike is upright.
Simply flip the bike upside-down and they unlock and you can flip the QR levers open and pull out the skewers like a regular QR.
Then just insert your regular QR's.
Zefal locking skewers.
http://www.zefal.com/en/locks/81-lock-n-roll.html
PS - they are exposed cams, so don't use with horizontal drop outs, if you got 'em on the rear wheel. Only use for vertical drop outs.
I have a pair of these, and they work...kind of. I like how elegant and simple the mechanism is, but they don't work to well as quick releases. Not only does the locking mechanism require that the lever be horizontal (which just looks wrong), but they require a lot more work than I would like to actually use.
Granted, this really comes down to a few extra minutes every flat tire, and they make no real different while actually riding, but it's just bad enough to bug me. Maybe the theft protection is enough to make it worth it.