Brake Proportioning Valve Bleeder Tool - Black Nylon Universal Fit - GM-Style Combo Valves Dual Disc & Disc/Drum PV2/PV4 - AC Delco 172-1353 & 172-1371 for Non-Adjustable GM. Versatile Brake Tool: Experience seamless brake maintenance with the Brake Proportioning Valve Bleeder Tool.
