The KryptoLok Series 2 STD U-lock is a key part of our Security Package and together with the other elements of the package provides a great theft deterrent . This lock now includes a reinforced steel shield over the crossbar and cylinder giving enhanced security to internal functions. The 13mm hardened Performance steel shackle resists cutting and leverage attacks. The lock includes two “I” keys for the disc-style cylinder. The KryptoLok series 2 STD is 4”x 9” and has an anti-theft protection offer of $1,500.