Squire SS100 / SS100CS padlocks, and chain to suit now in stock! The "Worlds Strongest Padlock" is 100mm (4") in width, 150mm high (6") including the shacke and weighs in at 4.5kg
Squire SS100S 100mm Stronghold Padlock Solid Steel Open Shackle
World-beating Squire Stronghold® SS100 range expands - Locksmith Journal
Squire SS100S CEN6 Padlock with twin R1 lock cylinders