We Give You Both Size Adapters! Most On Ebay Are Sold Without Bigger Adapter.  Stop Guessing And Get Tuned!

UNIVERSAL DUAL CARB SYNC TOOL AIR FLOW METER SYNCROMETER WEBER DELLORTO

Sync your multiple carburetor setup with this tool. Compatible with most throat-style carburetors and velocity stacks.

This carburetor airflow meter measures air intake at idle and reads on a small snail-style dial and works in both vertical and horizontal positions. Small adapter tapers from 40mm to 60mm wide and slips inside the tool. Larger adapter tapers from 60mm to 70mm wide and slips over top the smaller if required for larger applications. Custom adapters can be made by the user to work with many applications.
Compatible with many Weber IDF, IDA, Solex, Dellorto, and Empi carburetors.