A: This tool is compatible with CPP proportioning valves and supports DISC/DISC and DISC/DRUM braking systems, including PV2 and PV4. It works with most passenger cars, light trucks, and SUVs using these brake setups Specifications:Condition: 100% Brand NewColor: Blue., Material: Aluminum., Size: About 4., 00X4., 00X1., 50cm/ 1., 57X1., 57X0., 59in. High hardness, high durability, good corrosion resistance, long service life. Used to lock the low pressure exhaust valve, so that the braking system on PV2/PV4 can exhaust quickly and easily Its made of light and durable aluminum. Combination Valve Locking Tool Brake Proportioning Valve Bleeder Tool Fit For Disc ... - UK Aluminum Brake System Tool Use of this tool prevents the inconvenience of accidentally tripping your proportioning valve during the brake bleeding process. Tool is made of lightweight, durable nylon to protect the threads on your valve from damage due to accidental cross-threading Used to lock the low pressure exhaust valve, so that the braking system on PV2/PV4 can exhaust quickly and easily Brake Proportioning Bleeder Tool Brake Proportioning Valve Tool Compatible for D-I-S-C D-r-u-m PV2 Product Describtion:High hardness, high durability, good corrosion resistance, long service life. Proportioning Valve Dodge Ram 2500 at Peter Jacobs blog Its made of light and durable aluminum.