Furuno 525TID-BHD Bronze Thru-Hull 1kw 50/200 kHz comes complete with a High Speed Fairing block. The 525TID-BHD transducer, Style B258, is 25 times more sensitive than a single element transom mount 50/200khz transducer which leads to a much clearer picture and the ability to reach deeper depths. The B258 has an 18 degree beam at 50khz and a 4 degree beam at 200khz. Compatible with Furuno 600w and 1kw sounders with 10 pin plug. *This Transducer will not provide Bottom Discrimination and Accu-Fish.