Hydraulic Hand pumps is a hand operated unit which supplies oil to Hydraulic Jacks when in use. The capacity of the hand pump is defined by the Usable oil capacity of the Hydraulic jack. They come with Piston plunger assembly which helps in developing the pressure of 350bar to raise the Hydraulic jacks• Portable hand operated hydraulic pumps that easily generate up to 5000 psi (350 bar)• Fine Adjustment piston provides an easy way to achieve precise pressure• Vent valve is both durable and precise