• Security padlock with aluminum body, superior to iron or brass padlocks, does not rust with prolonged use • Pure copper cylinder that prevents jamming and provides secure locking • 7 mm hardened steel locking bar, resistant to cutting and high external forces • Automatic locking system: simply push down the shackle to lock, no key needed • Includes 2 padlocks and 4 identical keys, making key use and management easier • Black vinyl coating, free of metal burrs, does not harm the skin and is resistant to abrasion and corrosion • Versatile use both indoors and outdoors: protects cabinets, toolboxes, lockers, suitcases, backpacks, and other valuables against theft