Originally Posted by
wolfchild
..... makes what looks to be heavy duty chain. How difficult is it to defeat such a chain ?
It depends on how strong you are.
250lbs of angry bike thief jumping on a pair of long, high quality bolt cutters might be able to snap them.
Short of that, you would have to use a grinder.
If you lock your bike as high off of the ground as possible, there is less chance of someone leveraging your locks off.