We have added this new 5mm x 1mm Sterling flat wire as a lighter, less expensive alternative to the 5mm x 1.5mm wire. Because it is .5mm thinner, it is much lighter, resulting in a smaller price. You don't notice the rounded edge (see below) as much in this thinner wire.
This wire is great for making links, long pendants, or bangle bracelets.
I have this sterling silver wire custom made for me with rounded edges (lengthwise). When this wire is made into a bangle, the rounded edges give the bracelet a more finished look. This wire is dead soft, which works well with stamping, but it is quite thick so it naturally has a bit of hardness. The stamping and shaping harden it enough to stay stiff in a nice cuff or bangle shape.