Brake Proportioning Valve Bleeder Tool Blue Suitable for DISC/DISC, DISC/DRUM PV2 and PV4, AC Delco 172-1353, 172-1371

Features:
Brake proportioning valve bleeder tool is specially designed for CPP proportional valve to prevent the combined valve from tripping.
Used to lock the low pressure exhaust valve, so that the braking system on PV2/PV4 can exhaust quickly and easily.
Suitable for all non-adjustable GM type combination valves.
Suitable for DISC/DISC, DISC/DRUM PV2 and PV4, AC Delco 172-1353, 172-1371.
Made of premium material, strong and durable.