»The strength

Ironically, Kryptonite locks, long the emblem of the urban cyclist, had a flaw: they could be opened with a common-or-garden ballpoint pen (biro to you!). They set up a RMA process for consumers to exchange vulnerable locks for a new model.
I got my long-awaited return label from Kryptonite yesterday, entitling me to 9 pounds of locks. I'm returning the two New York short-shackle locks, the sort you see messengers tucking into a back jeans pocket) and the longer U-lock I bought when I got my first bicycle in Chicago.