half Round Double, 12 gauge, sterling silver wire, 4.39mm x 1.00mm, ring wire, ring shank wire, cuff wire

This is sterling silver double half round wire. Base width 4.39 and 1.00mm high. This is a good all-around ring size since it is not too thin. This is sold by the foot.

Sterling silver wire
Width 4.39mm x 1mm

I have enlarged the image to show detail.