These black plastic thru hull fitting are the same perfect drain fitting with a dark look. This fitting includes the black nut as shown in the picture.

Suitable for use as a drain or vent fitting for above the waterline use, the extended length barb has plenty of surface area to create a leak proof connection to standard 3/4″ ballast hose. Perfect for finishing your integrated ballast system, or for upgrading the look of your factory through hull fittings.