Master Lock Elite™ Heavy Duty Lock with Hardened Boron Steel Shackle, 52mm Wide Pack Quantity:2-pack The 5/16in (8mm) diameter octagonal

The 5/16in (8mm) diameter octagonal shackle is 1in (25mm) long and made of chrome-plated boron carbide

The 4-digit combination locking system

5401EURDCRM Select Access® Key Lock Box features a 83mm wide metal body for durability and accepts multiple house keys

The 4mm diameter shackle is 17mm long and made of chrome plated steel

Master Lock Elite™ Heavy Duty Lock with Hardened Boron Steel Shackle, 52mm Wide Pack Quantity:2-pack The 5/16in (8mm) diameter octagonalDesigned to defend against it all, the Master Lock Elite Heavy Duty Lock is our toughest lock yet. The anti rotation, boron shackle combines innovative CutGuard technology with a dual ball bearing locking mechanism for advanced protection against bolt cutters, hammers and pry attacks. An upgraded 5 pin cylinder fully equips this high security padlock to defy picking attempts. Premium materials including hardened steel, corrosion resistant aluminum and