This unit is designed for use as a vacuum brake or clutch bleeder. It uses compressed air between 70 psi (4.8 bar) to 170 psi (11.6 bar), for building vacuum in the tank. By attaching the proper adapter (brake tube) to the fluid outlet cover located on the top of the unit, the vacuum can be used to drain brake fluid from a hydraulic system such as the brake or clutch systems on an automobile. It can also be used to extract a variety of fluids from reservoirs including the master cylinder or those for power steering fluid. An automatic refilled kit is included with this unit. It is conveniently designed for use with a standard bottle of brake fluid, to maintain an adequate fluid level in the master cylinder while the hydraulic system is bled. Instructions are included with the unit for its use.