1.Pump is designed in two stage of high and low speed for quick oil output. Even if lack of electric power. lt coulld still be operated conveniently. It is the same as the electric pump in any working pressure and function. 2. Manual operation style. Oil pipe fitted with quick coupling could be ordered in any length. It could be fitted with pressuremeter(to be ordered). 3.Pressure could be stopped in middle. Inner designed overpressure safety unit protect hydraulic valve.