Title: Strong - maybe too strong!
Review: I was impressed when I first used the U lock on my new bike. Four days later, the lock jammed. Fortunately, I had not yet locked my bike. I made use of the cable lock and a hastily bought padlock until I could find a replacement. I worked on and off for two days to try to open the lock, following the advice of the manufacturer, but have returned it. I'm glad my bike isn't still locked up somewhere. I won't take that chance with an Onguard product again.
Is this product review negative?