5" NPSH Female x 4.5" NH (NST) Male Adapter Aluminum FM25F25T They usually require added modifications

They usually require added modifications like switches and extension cords

The 3/4" GHT Male side of adapter can hook into GHT Male

Firefighters have always known this

Inside diameter 1 1/2"

You can easily hook your hoses together without headache in a few seconds

5" NPSH Female x 4.5" NH (NST) Male Adapter Aluminum FM25F25T They usually require added modificationsSpecifications Female Side 1 5 NPSH Female (National Pipe Straight Hose) Male Side 2 4. 5 NH (NST) Male (National Hose National Standard Thread) 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