This is the non-standard 13cm version, which is not suitable for the majority of 2cvs & derivatives.
If you need the standard 18cm Duklok, (or if you are not sure), click here , where you will find more information about the Duklok and how to determine which of the two length options is most suited to your 2cv / Dyane / Ami / etc
Please only order this 13cm version if you are sure that it is correct for your vehicle.