A tough mother for thieves to crack: The Granit 460 shackle lock cannot be drilled or attacked with freeze spray. This shackle lock has a lot to offer: The 12 mm parabolic shackle, the housing, and the load-bearing parts of the locking mechanism are made from specially hardened steel. Combined with the Abus Extra Class cylinder, it results in a lock that can rightly be considered the safest method for securing high-quality bicycles. The locking mechanism is a standout feature: It is particularly secure thanks to the double locking system and comes with a coded reversible key. By ordering other locks that are similarly coded, all locks for members of a single family can be operated with one key.