... colors are available.3.Replaceable cylinder head O-rings,rubber piston ring and valves.4.Precise pressure gauge:0-30inHg,0-760mmHg ... configuration contains a vacuum tube,a vacuum meter,a brake fluid reservoir and pipe joints,to be widely used in auto repair ... ,leak tests,experiments,vacuum packaging and so on. Brass, Negative pressure, Brake Bleeder Kit,Auto repair tools,TS8003