1、Suitable for testing vacuum-driven components of automobiles and trucks, including distribution board advance mechanical heating and plates, PCV and EGR valves, and the headlight cover and exchange regulator. 2、Releasing the brake fluid pumping unit and replacing the car/motorcycle brake oil, can be operated by one person, more convenient and practical. 3、The joint is suitable for a variety of automotive brake systems, with a wide range of joint configurations for accurate measurement of vacuum pressure. 4、This kit includes joints, hoses, reservoir, reservoir cover, and hand vacuum pumps. The nozzles are easily immersed in hot water for 1-2 seconds before use. 5、Fine polishing and blackening of surface with a treatment of anti-rust surface, more beautiful and wear-resistant.