Dixon 2030-A-AL Aluminum Type A Cam and Groove Reducing Hose Fitting, 2" Plug x 3" NPT Female Straight body with two openings for connecting two hoses or pipes with cam and groove fittings or threads One male groove adapter end for connecting to female cam couplers and one NPT female threaded end for connecting to an NPT male threaded connection (Type A) Aluminum for resisting corrosion and tarnishing