5 STEP MANDREL. Beaders & wire artists alike will love this tool for its ability to create consistently sized loops, circles & coils in wire. Made from stainless steel with a PVC grip, the smooth surface will not mar wire. Available in 2 different sizes which are packaged both individually. Each tool offers 5 diameters. Mandrel measurements: 1.5mm-5mm & 6mm-10mm.