Crinkle Artistic Wires 20 Gauge (0.81 mm) and finer with the Crinkler Tool. Attach like gears onto the base, insert wire into the small hole on guide then catch into the center of the gears. Slowly turn gear with handle until wire is moving through the gears, continue to turn while pushing down on both gears until desired amount of crinkled wire is made. Change gears for a different crinkle pattern. Package has instructions and contains two styles of gears (rounded & pointed) and base.