This item fully fits AUDI A6 AVANT C6 4F ( Year 2005 to 20011)Production year: 2005 to 2011A perfect replacement for your old Wiper Arm & Blade of your car.Placement on Vehicle:RearPlease check the production year and version before you buy it.Diameter of nut: 9mm (as in picture 2)Length of Blade: 375mmLength of Arm: 500mmColor: BlackSize13"Package includesArm x 1Blade x 1