Reusable hose fittings are High-Pressure Hydraulic Hose fittings that can be assembled without special machinery.

You just need a couple of spanners or wrenches and preferably (but not essential) a Vice.

Reusables are readily available in Male and Female, JIC and BSP threads for one and two-wire hydraulic hose

Reusables are available for hoses sizes from 1/4" up to 1" Inside Diameter.