Proportioning Valve Bleeder Tool: Help you to lock the low pressure exhaust valve, make system bleeding more easy and fast, avoid the valve from . Easy to Operate: Just twist off your brake light warning switch on the valve, then screw this tool into its place easily. Material: Made from aluminum alloy, and ,specially designed for bleeding brakes Use range: Suitable for all popular non-adjustable type combination valves, so that the system on PV2 or PV4 can exhaust quickly and easily. Colour:blue Material:aluminum Package Contents: 2 x Brake Proportioning Valve Bleeder Tool Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.