PRODUCT DESCRIPTION The Master Lock Magnum M5XTLJ Heavy Duty Stainless Steel Padlock with Key features a 2 in. (51 mm) wide laminated steel body for maximum strength and reliability, and is surrounded by stainless steel and zinc outer components for weather resistance. The 3/8 in. (10 mm) diameter octagonal shackle is 2-1/2 in. (64 mm) long and made of Tough-Cut boron-carbide, 50% harder than hardened steel, offering maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering. The Lifetime Guarantee provides peace of mind from a brand you know and can trust. FROM THE MANUFACTURER Master Lock M5XTLJCCSEN magnum steel keyed padlocks offer strength, weather protection and versatility. They are ideal for use with residential gates and fences, sheds, workshops, garages, storage lockers tool chests and tool boxes.