1.Material:Plastic 2.Negative pressure can be up to 635mmHg 3.Many joints and tubes are included 4.Blow case package 1.Plastic cylinder and cylinder head,several colors are available.2.Replaceable cylinder head O-rings,rubber piston ring and valves.3.Precise pressure gauge:0-30inHg,0-760mmHg.4.Negative pressure up to 635mmHg.5.Plastic handle.6.Release valve.7.Include the parts of brake bleeder, ...