Rough Country - 1100-1.5-inch Wheel Spacer Adapter Pair (Converts 5-by-5-inch to 5-by-4.5-inch Bolt Pattern) for Jeep: 07-18 Wrangler JK 4WD, 07-18 Wrangler Unlimited JK 4WD/2WD FEATURES: Converts 5x5" bolt pattern to 5x45"; Ability to run wheels with more abundant 5x45" bolt pattern; Spaces wheel 15" allowing use of wider tires; Made from 6061-T6 Aluminum; Spacers are corrosion resistant; Studs are preinstalled; Sold in pairs NOTES: Fits 5 x 5.0" bolt pattern.; Cannot run another spacer on top of adapter. KIT CONTENTS: (2) 1.5-inch wheel spacers, Hardware SPECS: SKU: 1100; SPECS: Est. Install Time: 1 hour FITMENT: 2007-2018 4WD Jeep JK Wrangler; 2007-2018 4WD Jeep JK Wrangler Unlimited; 2007-2018 2WD Jeep JK Wrangler Unlimited