Total hydraulic bottle jack -THT109042 is an essential tool in various industries that helps with heavy lifting of different kinds of weights. These jacks use the power of hydraulic fluid or oil to move or lift heavy loads. Total hydraulic bottle jack -THT109042 creates pressure by moving oil through two cylinders via a pump plunger. The pump plunger is drawn back, which opens the suction valve and draws oil into the pump chamber. As the plunger is pushed down, the oil is transported through an external discharge valve and into the cylinder chamber