Sterling Silver Wire. Very Very Thin. 28 Gauge, Round, Half Hard. 1 Ounce / 120 Feet Of Wire. This is a very very fine gauge of sterling wire. It is most often used for wire crocheting and wire knitting. Half-hard is good for this size as it adds a little bit of body and strength to a very slender wire. Quantity: Each lot is approximately one ounce in weight, and approximately 120 feet long. May exceed this amount by up to one percent. Measurement Conversions: 28 Gauge Wire = 0.012 inches wide.