This product is a 3 piece set by STE, Germany.
1. SK-type synchrometer made by Germany STE.
The funnel has an inner diameter of 1.5 - 2.2 inches (39 - 55 mm) for carburetors.
2. Genuine small diameter adapter for STE SK-type synchrometer.
For use when the carburetor funnel has an inner diameter of about 1.6 inches (40 mm) or less.
3. Genuine L shape adapter for German STEE SK-type synchrometer
For use when the gap between the carburetor funnel and the peripherals is less than 4.7 inches (120 mm).
Due to the nature of the material above, the rubber material on the surface may get black stained by the surface for a while after the first time of use.
In addition, there may be some scratches or dents due to the method of forming during manufacturing, so please rest assured that there is no problem with the use and measurement of the product.