Brake Proportioning Valve Bleeder Tool, Proportioning Valve Brake Tool Compatible with Non-Adjustable Style Combination Valves, Disc/Disc Disc/Drum PV2 PV4, AC Delco 172-1353 & 172-1371 (Gold). 【Easy to Use】:The process of installing the brake proportional valve bleeder tool is simple and does not require the use of other tools.
