Laminated Steel Padlock. 3/8" (10mm) diameter, 1" (25mm) high, 15/16" (24mm) wide shackle, 2" (51mm) wide laminated steel body for superior strength. Hardened boron alloy shackle for superior cut resistance Keyed different, Non-rekeyable, 4-pin tumbler cylinder helps prevent picking. Dual locking levers provide extra pry resistance.