Wheel spacer kit 20mm incl. wheel bolts, for Opel Adam Rocks S NJT alum. wheel spacers 20mm incl. wheel bolts with general operating permit (ABE)! wheel spacer kit - 20mm per axle (10mm each side) - with centering element - hole circle 110/5+108/5 - hub hole bore 65,1mm - 10x black conical wheel bolts M12x1.5 30mm Suitable for: Opel Adam Rocks S (S-D) - all NJT-Extrem wheel spacers are made of high strength aluminium - additionally anodized, so that there is no chance for rust to set in - with general operating permit / ABE (valid for the designated wheel/tire combinations) Determining the required wheel bolt length: - measure shaft length of the original wheel bolt in mm - add the original shaft length to the wheel spacer width - example: original shaft length 25mm + 5mm wheel spacer (each side) = 30mm new wheel bolt length - check whether conical or spherical collar bolts are required