This beefy new disc lock from Krall provides a high level of security at a very competitive price and with a very practical extra feature included. Based on the proven U-lock design, which will fit most current brake discs, the Krall disc lock can also be used as a padlock for many brands of security chain too. The lock has a hardened steel body and 12mm hardened steel shackle, both of which will resist hammers, saws and/or drills. High security ‘flat’ keys, three of which are supplied with it, operate the double locking mechanism, so both sides of the U-bar are locked securely in place.