Lowrance Structurescan HD LSS-2 Transducer.

Good working condition. 

Was used on my boat but changed to a different unit as someone who cannot cast put a sinker thru my unit display. 

Who shall remain nameless and onshore next time.

Cables can be joined once its pulled thru the hull. 
( I have done this before very easy. Each cable has its own color. Better than drilling large holes ).