I sold the car over 18months ago + the spacers etc so im afraid I dont have the details anymore, but as above just add the width to your exisiting bolts for the length you need
2010 Mercedes W212 E Class E350 CDI Sport, 2006 Mercedes W169 A Class A170.
Looking good.....especially like the blacked out rear chrome....makes a bigger difference than I did expect....
Really nice looking car....such a pity that they are so much more expensive (for me at least) to insure than the mechnically near identical E63 212!!!......which has taken it off my "next car" list....shame.