AMERICAN LOCK® NO. A1105RED SOLID ALUMINUM RECTANGULAR PADLOCK, RED AMERICAN LOCK SOLID ALUMINUM PADLOCKS ARE MADE FROM AN EXCLUSIVE ALUMINUM ALLOY, OFFERING STRONG PROTECTION AGAINST THE ELEMENTS THEY ARE OFFERED IN A FULL RANGE OF WIDTHS, SHACKLE DIAMETERS AND LENGTHS MOST ALUMINUM PADLOCKS HAVE HARDENED BORON ALLOY STEEL SHACKLES FOR SUPERIOR CUT RESISTANCE, AND ARE CHROME PLATED FOR EXTRA CORROSION RESISTANCE.