No offense.. how did you do in reading comprehension, and with picture books
(Hides from Moderator)
In all seriousness.. if you look at my OP, I asked about the Filter Wrench "tool" for removal of said Filter. Not the filter itself =)
So are you talking about the nut size on the part in your hand or the outside diameter of the oil filter?If you had taken the time to look at the first link it gave the dimensions of the filter from which you could have established the size of the wrench you needed, next time just get under the car and measure it yourself