The SIGTUNA Bike Heavy Duty U Lock is quite literally a tough nut for bike thieves to crack since it incorporates what we call Viking-strength steel; 16mm bars manufactured from specially hardened steel locked into a Double Bolt Locking Mechanism, which offer protection against even the most determined of attacks. The picking-resistant Precision Locking Cylinder from SIGTUNA also has a lot to offer and ensures outstanding protection against attempts at manipulation. This combination has earned the WODAN-16 U-lock a top score of 8/10 in the SIGTUNA Security Level System.
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