Do you have specifications (bolt spacing, offset, etc) on the wheels you have for sale
You need to read a little slower, or just pay attention to what your reading.
Here is a Quote from the seller at the beginning of his description;
"They came off a 2000 S420, but will also fit other models. Size is 18X8.1/2 et44"
Assuming that you are remotely familiar with Mercedes cars, virtually all Mercedes have the same bolt pattern - 5x112...
The seller already gave you everything else...!
18 inch wheels that are 8 1/2 inches wide, and the ET 44
Your question may be out of place on this specific post, but is needed for most wheel advertisements.
If every seller would just post in the basic 3, (Rim size, Width size, & ET) no one would have to keep asking these very important details.
PS: in case you don't know, ET is the acronym for Offset