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Item #: 331577832

The Blackburn San Quentin U Lock makes it easy to lock up your bike and keep all its’ moving parts secure. The twist-proof hexagonal shackle provides secure protection, and the lock mechanism is designed to be impervious to bump keys or lock-picking attempts. The lock also has a dual-bolt lock mechanism that engages both shackle ends for additional safety, along with three laser-cut keys.


  • Twist-proof hexagonal shackle for strong security
  • Dual-bolt lock mechanism that engages both shackle ends for improved protection
  • 10 mm steel shackle with reinforced steel locking mechanism
  • 3 laser-cut keys with key replacement program
  • Specially designed locking mechanism resistant to bump keys or lock-picking attempts


  • Hardened steel shackle
  • Dimensions: 108 x 230 mm


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