When we were in Montreal, we got some fantastic feedback about our locks!

A thief went at this Stocks Lock with a 4"x4" post, and
DID NOT GET THE BIKE!


The lumber was on the sidewalk beside the safe bike and the mangled lock. The City of Montreal public works department had to use hydraulic cutters to free the bicycle. The owner was so happy that he went back to the store and bought another Stocks Lock!