The Mityvac lets one person successfully bleed brakes at the wheel, without depressing the pedal or wasting fluid. This versatile little pump moves about 1 cu. in. of fluid with each stroke, pulling out dirt, old fluid, and air. It develops and holds approximately 25 inches of vacuum. Kit includes pump, brake bleeding adapter package user's manual, 3 lengths of 1/4in. I.D. tubing (1 1/2in., 3in., and 18in.), 3in. of 5/32in. tubing and reservoir jar with transfer and storage lids.