Material: Vacuum Carburetor Synchronizer, made of metal and plastic material, durable and pratical.
Function: Complete kit with vacuum gauge, hose, extension rod. Makes synching your carburetor setup fast and easy.
High Efficient: Quickly and accurately check the compression on the gasoline engine, the simple pressure release button on the side of the tester.
Fit For: Suitable for 2, 3 or 4 cylinder engines. Each unit includes a gauge mounted on a metal base for a work surface.
Note: Calibrate the gauges first. Using one gauge at a time on the same carb and using the tiny adjustment screw on the dial to ensure all 4 gauges show the same reading for 1 carb.