Failed to function as intended
The first thing you should be aware of is that the packaging on this product states that you should tighten them to 7 N-m (newton-meters). That is 5.2 pound-feet, or "not very tight."
I did not have access to a torque wrench when I first installed these, so I simply installed them at what seemed like a reasonable tightness (fairly tight). Soon after, my rear wheel shifted during a tough climb, causing it to rub the frame. I tried making the skewers tighter, and this worked with some success, but the rear wheel would still shift from time to time.
Eventually I made it over to a bike shop where the mechanic showed me with a torque wrench what 7 N-m felt like (loose). I tried riding like that just for kicks and sure enough the first time I stood on the pedals the rear wheel shifted again. At this point I decided to tighten them back down, ride home, and put my original quick release skewers back on. No such luck - the Axelrod skewer stripped out with a dull "pop," forcing me to borrow another skewer to get home.
I rate this product "unsafe." They are not tight enough at the rated torque and fail at higher torques.
Can't tighten enough
I agree with the previous review - these skewers are not suitable for a bike with horizontal dropouts. You can't get the skewers tight enough to hold the rear wheel in place without the Axlerodz self destructing. I have a torque wrench and 7 NM or torque wouldn't hold, so I tightened them to 8 NM, which did seem to hold.
I got a flat this morning and when putting the wheel back on the threads on the acorn nut stripped out long before I got to 7 NM.
acorn nut will strip
In response to the previous reviews, I don't think these are intended for use with horizontal drops (get real track bolts!). They are to prevent opportunity theft of wheels from say a mtn bike used as a commuter bike. I think they do an ok job here.
But, the nut stripped on me also and I had to replace it. So be careful when tightening or they strip! as such, not a very good product...
Acorn Nut Will Strip X 2
Just like the other reviews, the nut striped with ease. No over tightening or cross-threading. Had to remove my wheel to fix a flat, and BAM, stuck looking for a skewer just to get home. Would NOT Recommend!