I had an in-line combination lock with 1/2" cable; my bike was secured to the wrought iron bicycle enclosure, beneath the stairs of my apartment building. The thief attempted to cut the cable, to no avail, then cut the metallic portion where the cable meets the combination lock. Thief must have used heavy bolt cutters.
Protect your bike – get a security protection label!
Apply the protection label to your bicycle and instantly reduce the risk of theft by up to 50%! Moreover, if the bike is stolen, you increase the chance of its safe recovery by up to 70%.