Edelbrock UNI‑SYN "A" carburetor balancing instrument is sized for 1‑ and 2‑barrel carbs with round tops and helps synchronize carburetor intake pulses for smoother idle and throttle response. The handheld tool comes with installation instructions and is intended for basic tuning and maintenance on compatible carburetor types, offering a practical means to equalize vacuum and ensure consistent operation across multiple barrels.

Edelbrock A Uni-Syn