Part number - ITCSK1-30/001
The Synchrometers feature a tapered rubber cone which is inserted into the carburettor aperture, however with so many different carburettor configurations adapters are required to facilitate the correct fit, to find out what adapter (if any) look for your vehicle and carburettor type then the designated adapter is stated.
Please see the adapter list to match your vehicle/carburettor with the correct adapter