Brake fluid bleeder 12v sealey vs0208 bleeds brakes first time every time one man bleeding operation powered by the vehicle s 12v battery and maintains system pressure using an electric pump to drive clean hydraulic fluid through a long high pressure hose to the reservoir variable pressure delivery means that vehicles with specific requirements may be bled safely pressure can be adjusted to a maximum pressure of 2bar which is suitable for most vehicles supplied with a 42mm semi univers