"Half-Hard" wire is malleable; however, it will maintain an intricate shape under stress. In reference to wire gauge size numbers, the larger the number, the smaller the diameter of the wire. Example: 24 gauge wire is smaller in diameter than 18 gauge wire.
Wire-Wrapping Wire>Gold-Filled>Gold ColoredWire-Wrapping WireGold-FilledGold Colored21 GaHalf HardSquarehttp://www.firemountaingems.com/itemdetails/h201398wrH201398WRWire, 12Kt gold-filled, half-hard, square, 21 gauge. Sold per pkg of 5 feet.//image1.fmgstatic.com/images/p1398wrb.jpg15.9315.93As Low As $2.73 per foot