ABUS Mechanical 190/60 60mm Heavy-Duty Combination Padlock Closed Shackle (4-Digit) CardedThe ABUS 190 Series Heavy Duty Combination Padlock with a 4 digit resettable combination. The all new combination mechanism improves reliability and the positive code wheel action reduces code setting errors. It has a solid hardened steel jacket to resist physical attack, a through hardened steel shackle which resists hacksaw attacks, a black chrome shackle for better corrosion resistance and ball bearing locking which gives protection against pulling