Step Looping Tool Wire Wrapping Loop Making Beaders Mandrel Tools Simplify Your Wire Looping Projects Mandrel Has 5 Different Diameters; 1.5, 2, 3, 4, 5MMDiameter Create uniform and consistent loops in your wire work Mandrel is stainless steel with precise steps for different sizing. Non-Slip Rubber handle for ease of use Mandrel is 5.5 inches total length