0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 1.0mm, 1.3mm, 1.5mm, 1.6mm, 2.0mm, 2.5mm, 3.0mm, 3.25mm, 3.5mm, 4,0mm, 5.0mm.

Square sterling silver wires (sold by the foot):

0.5mm, 0.75mm, 1.0mm, 1.25mm, 1.5mm, 1.75mm, 2.0mm, 2.25mm, and 2.5mm.

Half-Round sterling silver wires (sold by the foot):

1.5mm, 2mm, 3mm, 4mm, 5mm and low dome 5mm, 6mm, 10mm and 12mm