Heavy duty industrial grade rubber air hose reel, heavy gauge all steel reel assembly, ratchet gearing locks reel at desired hose length, use reel for air, water, oil or grease hoses.
In principle, the hydraulic jack is based on Pascal principle, that is, the pressure of the liquid is the same everywhere, so in a balanced system, the pressure exerted on the smaller piston is relatively small, and the pressure exerted on the larger piston is also relatively large, which can keep t