The Master Lock Magnum No M930XDLH solid body padlock features a 212 in wide solid steel body for maximum strength and reliability The 716 in Dia octagonal shackle is 2 in 51 mm long and made of ToughCut boroncarbide, 50 harder than hardened steel, offering maximum resistance to cutting and sawing The 5pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering The covered keyway offers maximum weather protection and reinforced body bumper protects against scratches The lifetime assurance provides peace of mind from a brand you can trust