Heavy Duty Padlock | Military-Grade Weatherproof

American Carbon-Steel Padlocks Are Built To Last Strong & Durable: Interlocked & riveted steel plate construction defend against physical attacks. Dual ball-locking mechanism cannot be shimmed or bypassed. Weather Resistant: Zinc-plated carbon steel is rust and corrosion-resistant. Tougher To Cut: Boron shackle is 50% harder to cut than case-hardened steel.  Military Grade: Manufactured to aerospace tolerances, exceeds US military requirements for locking mechanisms. Pick & Bump Resistant: High security 5-pin cylinder with up to 10 security pins for best pick resistance. 2 Keys Included Per Lock Made in the USA with US and global components. Guaranteed for Life TECH SPECS Exceeds ASTM F883-09 for bump resistance RoHS (Reduction of Hazardous Substances) compliant zinc plating Steel-alloy shackle complies with ASTM 5 (Shock Test) Shackle – 5/16” diameter with 1 1/8” clearance. American Carbon Steel 44mm wide body (1 ¾”) Dual hardened ball locking mechanism canno