Vexilar Broad Band Ice-Ducer Transducer f/FLX-30 Only [TBB-100]Broad Band Ice Ducer Transducer for FLX 30 Only Ice Ducers have revolutionized the way anglers use sonar for ice fishing. Their ease of use and reliable performance have eliminated many of the former problems with seeing the bait, a most important requirement for ice anglers. Additionally, anglers can easily jump from hole to hole in an effort to find and catch fish on the move. Vexilar offers the Ice Ducer in three beam angles: 19 degrees, 12