Originally Posted by Prowler

It may not be open. I see these at the LBS. An idea SO complex that folks get confused. They assume it's like a wing nut, wind it down nice and tight by turning that wee handle thing. "Nice they put that curve on the handle, so it's easier to spin tight. I just wish the other end was a hex nut so I could use my adjustable wrench or slip joint pliers."

Looks like the rear skewer is the same way. I sometimes have to use a pipe to get these thing loose again.