PT Coupling DFH Series 15DFH Aluminum Cam and Groove Hose Fitting, Coupler with EPDM NH Thread Gasket and Buna N Cam Gasket, Brass (HB) Cam Arms, 1-1/2" Coupler x Female Fire Hose (NH) Suitable for coupling to NH male end of fire hose Coupler at one end and NH female fire hose threads at the other Aluminum for lighter weight and resistance to corrosion Brass cam arms for low magnetic permeability and resistance to corrosion Suitable for use with water, hydraulic oil, coolants, gasoline, and petroleum products