Beaders and wire artists alike will love this tool for its ability to create consistently sized loops, circles and coils in wire. Made of carbon steel with a PVC grip, the smooth surface will not mar wire. Available as a 2-piece set. Each tool offers 5 diameters. Small mandrel measurements: 1.5, 2, 3, 4, & 5mm Large mandrel measurements: 6, 7, 8, 9, & 10mm