Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Brand_Meguiar's In addition to dual GFCI

In addition to dual GFCI AC receptacles

add to the system's durability

Clear polycarbonate cover snaps on to meet Coast Guard and ABYC insulation requirements

Up to 1’ contours provide a more accurate depiction of the bottom structure for improved fishing charts and navigation in swamps

Fits Pre-2009 Rule Mate Models RM500

Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Brand_Meguiar's In addition to dual GFCI175WR 4 Transducer Housing Wrench A single handed wrench that holds the main thru hull housing via the 'wrench flats' on the top of the housing to facilitate tightening of the hull nut. Use wrench 164WR 2 or 164WR 3 for the hull nut. For use with: B164 B175 SS164 SS264 IMPORTANT: the design of the housing for these transducers changed slightly in June 2012. This wrench is for the newer design and has an internal width of 2 3 4". If you need a wrench