AMERICAN LOCK® NO. A1106BLU SOLID ALUMINUM RECTANGULAR PADLOCK, BLUE 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.