RockTrix for Precision European - 4pc 1" Thick Jeep Hubcentric 5x5 Wheel Spacers, 71.5mm Bore, 1/2" Studs Nuts, Fits 99-10 Grand Cherokee, 07-18 Wrangler, 06-10 Commander, XK WJ WK JK (25mm, 5x127) [JEEP APPLICATIONS] 2006-2010 Commander (XK). 1999-2010 Grand Cherokee (WJ & WK). 2007-2018 Wrangler (JK) [SPECIFICATIONS] Set of 4. 1.0" (25mm) Thickness | 5x5 Bolt Pattern | 71.5mm Hub Bore | 1/2"x20 Threaded Studs/Nuts [HUBCENTRIC DESIGN] Ensures exceptional wheel balance and eliminates chance of vibration. The 71.5mm bore ensures a tight fit on the Jeep hub. And the 71.5mm wheelcentric lip functions as an extension of the hub. [MANUFACTURING] CNC Machined to exact specifications from Aerospace Billet Aluminum. Undergoes anodizing process to prevent corrosion. Includes pre-installed heat treated 10.9 grade studs. [PRODUCT BENEFITS] Gives your Jeep 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 <span class="a-text-bold">Thickness</span>: 1.0 inch <span class="a-text-bold">Bolt Pattern</span>: 5x5&#034; (5x127mm) <span class="a-text-bold">Centerbore</span>: 71.5mm <span class="a-text-bold">Stud/Nut Size</span>: 1/2&#034;x20 <span class="a-text-bold">Material</span>: T6 Aerospace Grade Aluminum <span class="a-text-bold">Stud Grade</span>: Metric Grade 10.9