2.5" NH (NST) Female x 4.5" NPSH Male Adapter Aluminum FM25F25S or cam lock styles

or cam lock styles

5" Male NPSH

Female Swivel Side 2 – 2” NH (NST) Female (National Hose / National Standard Thread)

that means the inside rubber liner is likely smooth and strong

2.5" NH (NST) Female x 4.5" NPSH Male Adapter Aluminum FM25F25S or cam lock stylesSpecifications Female Side 1 2. 5 NH (NST) Female (National Hose National Standard Thread) Male Side 2 4. 5 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