1.Aluminium cylinder and cylinder head,several colors are available. 2.Replaceable O-ring cylinder head gasket,rubber piston ring and valves. 3.Precise pressure gauge:0-30inHg,0-760mmHg. 4.Negative pressure up to 635mmHg. 5.Steel handle. 6.Release valve. 7.Include the parts of brake bleeder,easily bleed brakes by yourself. 8.Detailed English/German/Spanish instruction manual. 9.Blow molded hard case or soft plastic package are available. 10.The standard 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.