This is the black round float for Solex Pierburg PDSI carburetors.
Please note that there are 2 versions of floats for the PDSI and that this is the black round one as opposed to the white rectangular one which can be found HERE.
This version is supplied including the red copper bracket as shown in the photo.
Required quantity per carburettor:1
This is item number 36 on the drawing of the Solex PDSI.
Please note that this carburetor was marketed as well as under the Solex brand as under the Pierburg brand.