RockTrix for Precision European - 2pc 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 2. 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