The shapes of the blades and the technology behind have been proven over the years with millions of sales around the world. The balance between the body and the spinner blade results in a streamlined, dynamic unit that is ideal for unusually long and precise casts. The range is continuously being supplemented by successful new designs based on ideas received from interested anglers and careful analyses of catches by our testers on location. So you can totally rely on the working characteristics of EFFZETT? spinners! When the spinner makes its? run correctly it sends out constant pressure waves that can be recognized by predatory fish from long distances, inviting them to attack. Compare the working characteristic and these models will convince you.