For the racer that needs to connect two same size female 3/8" NPT pipe thread fittings together RBS carries this billet alum. coupler that is just the ticket.
Anodized for corrosion and galling protection as well as lightweight as it is made from billet alum. Fitting has a six sided wrench hex to allow the racer to hold the coupler and tighten the fittings into the coupler with ease. Both sides are the same 3/8" NPT size.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.