STANDARD THRU-HULL FITTINGS Brass fittings, chromed, threaded Length Thread Reference 44 mm 3/8" 13554 60 mm 1/2'' 13555 60 mm 3/4" 13556 60 mm 1" 13557 60 mm 1 1/4" 13558 60 mm 1 1/2" 13559 60 mm 2" 13560