The ABUS 78/50KC is a good robust and strong steel body padlock with hardened steel shackle. This model has a very visible 3-digit combination clock face type dial. This ABUS 7850C is ideal for low to medium security applications where ease of use is a priority, eg: schools colleges, sheds and lockers. The Padlock DOES NOT come with the override key, this can be purchased separately. Overall width: 48mmOverall height: 75mmOverall depth: 33mm Shackle width: 21mmShackle height: 21.5mmShackle Dia: 7mmEach padlock has it\'s own pre-set combination, but the key over-ride function allows the suite master key to open any padlocks that suite.