With the Steel-O-Flex PHANTOM 8960, you can lock up your bicycle and leave it with peace of mind. 17mm thick steel shells encase the steel cable like scales. Just like the other structural parts of the Steel-O-Flex PHANTOM 8960, the shells are made of specially hardened steel and are incredibly hard to bend. And the Steel-O-Flex PHANTOM 8960 doesnt sacrifice any convenience either: The Fidlock magnetic bracket makes mounting and removing the cable lock to and from the wheel a lot easier.