Carbon Steel Mandrels 2 Piece Set Looping Coiling Jewelry Tool Wire Working 2 Piece Mandrel Set; This is a new 2 piece mandrel set Use this tool to make consistent and uniform loops and coils with wire; Beaders and wire artists' favorite tool The smooth, carbon steel surface will not scratch or damage the wire being wrapped around it; Each mandrel offers 5 different diameters to use The small mandrel offers sizes 1.5mm, 2mm, 3mm, 4mm, and 5mm; The large mandrel offers sizes 6mm, 7mm, 8mm, 9mm, and 10mm The handles have rubber grips, making using this tool easy and comfortable; Measurements: 5 1/2 in length