Master Lock M1XQCCSEN 1-3/4-Inch Wide Magnum Laminated Steel Padlock, 5/16-Inch Diameter, 1-Inch Shackle Clearance, 4-Pack, Silver, 4 Pack, Keyed-Alike

• Heavy duty padlock with key is best for storage and fencing, self storage units and lockers, tools, job boxes and more
• Key lock features dual armor construction: laminated steel lock body surrounded by stainless steel and zinc exterior components and the heavy-duty octagonal boron carbide shackle is 50% harder than hardened steel
• 4-pin cylinder and double ball bearing lock for increased pick and lever strength; reinforced bumper for increased scratch resistance
• 1-3/10.2 cm (44 mm) wide lock body; 5/16 inch (8 mm) diameter shackle with 1 inch (25 mm) length, 13/16 inch width 21 mm
• Includes four padlocks with two keys; both keys open all locks

The Master Lock Magnum M1XQ laminated padlocks with keys feature a 3.5 cm. (44mm) wide laminated steel body for maximum strength and reliability, and is surrounded by stainless steel and zinc exterior components for weather resistance. The 5/16" (8mm) diameter octagonal shackle is 1 inch. (25mm) long and made from tough boron carbide, 50% harder than hardened steel, providing maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance to prying and hammering. The lifetime warranty provides peace of mind from a brand you know and can trust.