4x synchronizers with fixed plates (vacuum). There is a pressure value on the gauge. The maximum pressure is 1KG. If the pressure exceeds or is unstable, the guage can be broke. enable user to hold vacuum values in use.
Fuel Vacuum Carburetor Synchronizer Carb Sync Gauge Set Adjustable Motor
VEVOR Pro Fuel Vacuum Carburetor Synchronizer carb sync Gauge Set Rubber Hose
Fuel Vacuum Carburetor Synchronizer Carb Sync Tuner Balancer Adjustment Tool Kit
Fuel Vacuum Carburetor Synchronizer Gauge Adjustment Tool Kit synchronise
Fuel Vacuum Carburetor Synchronizer Carb Tools sync 4 Gauge Set with Hose Tool
