DIY Jewelry Making: About 50 circles of Stainless Steel Memory Wire, Silver Color, Size: about 0.5mm in diameter, 55mm inner diameter Stainless steel memory wire is rigid, pre-coiled, and it's easy to use. Just make a loop on one side, string on beads and finish with a loop or a half-drilled bead. Use in single loops or multi-loop combination Size: about 0.5mm in diameter, 55mm inner diameter