Wheel Spacer Detailed:Thickness:2inch (50.8mm)/Wheel Bolt Pattern：5x5" (5x127mm)/Center Bore：71.5mm/Thread Size:1/2-20 Fitment:2005-2010 Grand Cherokee WK/2005-2010 Commander XK/2007-2018 Wrangler JK JKU 4WD/2007-2010 JK Wrangler Unlimited 2WD 1999-2004 Grand Cherokee WJ (NOT FIT 2011-2017 Grand Cherokee WK, TJ YJ ZJ) 2008-2019 Journey Material:The Wheel Spacers are made of 6061 aluminum alloy,CNC automatic processing for better durability and lighter weight. The surface treatment is anodized black, which is not easy to rust and lasts longer Advantages:Wheel spacers can positively impact your vehicle’s handling and stability. By widening the track width, the vehicle’s center of gravity is altered, providing better stability during turns and reducing the chances of rollovers Notice:Please recheck your vehicle compatibility (make/year/model) in the product description/pictures before purchasing the wheel spacers.Please measure the size you need and do not purchase the wrong size