The all new Tri-Beam Ice-Ducer offers anglers an 8 degree, 12 degree and a 20 degree transducer cone angle in one housing. The Tri-Beam will fit all models of Vexilar FL flashers going back over 20 years! A simple switch box allows you to quickly change from one cone angle to another, allowing you to get the most out of your Vexilar.