The American Lock No. A5300 Shrouded Solid Steel padlock features a 1-3/4in (44mm) wide case hardened solid steel shrouded body with a 1-1/8in (29mm) tall, 3/8in (10mm) diameter hardened boron alloy shackle for superior cut resistance. The shrouded shackle defies cutting and sawing and a dual ball bearing locking mechanism resists pulling and prying. The 5-pin APTC12 rekeyable cylinder with serrated pins is virtually impossible to pick