ABUS Rock 83CS/55mm open shackle heavy-duty fully re-keyable through hardened steel alloy padlock, with a ball bearing locking mechanism for extra security, has a tough through hardened steel alloy shackle as standard with NANO PROTECT™ Chrome Plating, helping to make rusty shackles a thing of the past. Can be adjusted to operate key retaining or no key retaining, automatic locking or key to lock. Where to use: The 83 series range of padlocks offer a medium to high level of security, with the ability to offer various levels of security within one keying system and is suitable for internal or external use.Hardened steel alloy body padlock.