4.5" NH (NST) Female Long Handle x 4" NPSH Male Adapter Aluminum DMH6060T You already have your own

You already have your own 1-3/4" Inch couplings and you can connect them yourself

Applications - Heavy Industrial & Fire Use

Using 2" Yellow Double Layered Fire Hose Without Fittings

They are the more economical choice

Industrial & Fire 4” NH (NST) Female Swivel x 6” NH (NST) Female Rigid Fitting Anodized Aluminum

4.5" NH (NST) Female Long Handle x 4" NPSH Male Adapter Aluminum DMH6060T You already have your ownSpecifications Female Side 1 4. 5 NH (NST) Female (National Hose National Standard Thread) Male Side 2 4 NPSH Male (National Pipe Straight Hose) Working Pressure 300PSI Max Test Pressure 1000PSI Max Material T 6061 Aluminum (Aircraft Grade) Finishing Anodized (99. 9% Lead Free) NFPA Standards 1963, 4. 12, 5. 1 5. 6. 4 (Corrosion Resistance) Military Standards MIL A 8625 Type III, Class 1 Industrial Standards International ASTM B221 UL Labs Standards