Universal Vacuum Carburetor Synchronization Balancer Gauge Tool

I have had a coupe of these with analog gauges so I'm familiar with how they read. Did a good job on both 2 and 4 cylinder bikes.

The gauge work as intended but it arrived with glass broken everywhere!

Good Quality Product

It works good 👍 😌

The glass comes off when you remove the caps to synchronize the gauges

Used for tuning 4 cylinder Motorcycle, easy to use, accurate, clear instructions, kit comes with everything needed.

You'll most likely need to zero the gauges when they arrive, so be careful as the glass isn't tempered and easily flakes off the edges. Remember to properly feather the vacuum by the screw ports after you connect them. Feels like rubber seals, so you'll need to check them periodically for correct measurements. The more expensive gauges have brass flow valves that don't "creep" during use. Cheap blow molded case and the hoses could be a little longer so you can hang the gauges off a stand.They do what they should. We'll see how long they last.

It was just what I expected.