It used to the red binder plate with the leak test tools
The number 27 the red binder plate to be used with the number 1 Expansion Valve. It can be used for assembly leak detection of quick connector.
Automotive Adjustment Tape Block Valve Air Leak Detection Tools
Automotive Block Valve Air Leak Detection Tools
This group of leak test tools that you can test more than 100 models. It also can be install in the bellows on the square of the thermal expansion val...