The Eezibleed Pneumatic Brake Fluid Extractor is vacuum operated and works on normal compressed air through a standard ¼ pcl adaptor. The unit contains a vacuum fluid extractor, bleeding hose with brake nipple adaptor and refiller bottle.Pneumatic brake bleeder. (Minimum air flow required 3-4cfm)Easy brake bleed operation.Automatic shut off when fluid reaches maximum level.2 litre extracting tank.1 litre re-filler bottle.