12mm Hubcentric Wheel Spacers (5x112 66.6) for Mercedes with Silver Bolts (12x1.5, 40mm Shank) [VERIFY FITMENT] Applicable for newer Audi vehicles (09+) A4 S4 A5 S5 A6 S6 A7 S7 A8 S8. Before purchasing, see Description section for specific year and models and also to read the Important Notes section. [SPECIFICATIONS] WHEEL SPACER Thickness: 1/2" (12mm). Bolt Pattern: 5x112. Hub Bore: 66.6mm | LUG BOLT Thread Size: 12x1.5 | Shank Length: 40mm | Seat Type: Ball Seat R12 | Grade: 10.9 [HUBCENTRIC DESIGN] Ensures exceptional wheel balance and eliminates chance of vibration. The 66.6mm bore ensures a tight fit on the hub. And the 66.6mm wheelcentric lip functions as an extension of the hub. [MANUFACTURING] Wheel Spacers are CNC Machined to exact specifications from Aerospace Billet Aluminum. Undergoes anodizing process to prevent corrosion. Lug Bolts are manufactured with cold forged steel. Zinc coating provides exceptional corrosion resistance and appearance. Additional Heat Treating Process ensures dependable strength & durability. [PRODUCT BENEFITS] Gives your vehicle a more aggressive stance. Improves handling characteristics and stability. Fixes brake caliper clearance issues. Increases tire clearance to allow installation of wider wheels and tires.