A typical jack hose is 1/4" inner diameter with 3/8" male pipe ends and is usually 6 feet long.
One pipe (NPT) end threads into the hydraulic hand pump, while the other end usually threads into a hand tool hydraulic nipple.
A hydraulic coupler is usually threaded into the ram.
Remember that even though 120J Jack Hose is rated to 10,000 psi, jacking applications are static pressure situations at ambient temperature.
DO NOT USE 120J jack hose assemblies for impulsing or regular hydraulic applications!
Please note, many manufacturers claim that their jack hose meets the Material Handling Institute IJ100 standard for jack hose, but in fact, this standard was withdrawn several years ago and is no longer in effect.