It couldn't be simpler - simply crank your wire around the rod as shown and you've made a coil spring. Pull the spring off and insert a core wire . Now coil this spring around the larger rod in your kit to form a cylinder bead.
Then try shaping it into a bi-cone or sphere. Imagine the possibilities! Tool includes two cranking rods 1.6mm and 3.4mm diameters, a bracket frame with screw and instructions. The Coiling Gizmo is suitable for use with all gauges of wire to make Beaded jewellery and other designs. (Wire not included).  

Beadalon - Artistic Wire Coiling Gizmo