1.5" NST (NH) Female Swivel x 1.5" NPT Male Pipe Adapter SM250NYFD you'll probably get a hose

you'll probably get a hose with a leak or two

The NPT female can fit into NPT only

Test Pressure - 800 psi

that means the inside rubber liner is likely smooth and strong

2 1/2" Diameter

1.5" NST (NH) Female Swivel x 1.5" NPT Male Pipe Adapter SM250NYFD you'll probably get a hoseChange Threads From Female NST (NH) Swivel Fire Hose To NPT Male Pipe With An Easy Swivel Adapter This is purely a female to male adapter designed to change threads without reducing diameter. The swivel bearings make it smooth and easy to operate while a fire hose is attached to the male end. You can attach and detach the female swivel without tangling up your hose. This adapter let's you hook your fire hose into standard pipe threads. It's one of the