Lowrance 000-0099-94 XT-20BL 20-Feet 50/200kHz Transducer Extension Cable 20 ft. transducer extension cable (50 kHz or 200 kHz) XT-20BL 20' transducer extension cable, Blue connector For use with BL transducers. Also for BL connector speed and temp sensors Length 20' long Take the Worry Out of Transducer Installation With 20 Extra Feet of Cable. Route Your Transducer Cable Correctly Because You Have Enough Cable