Allows extra clearance between the wheel and the wheel hub assembly increasing the offset which allows for larger tire installation to the vehicle. Wheel spacers also increase vehicle's performance in terms of handling and traction. The further the wheel is from the hub assembly, the better its grip. Wheel spacers extend the wheels outward the vehicle giving it a more aggressive look, which also allows for large brake caliper installations or lift/lowering kits. The wheel spacers are 1.5 inch thick with 78.1mm(3.07) center bore diameter, 14 x 1.5 threaded studs and a 6x139.7mm bolt pattern. Compatible with the Following: 1999-2020 Escalade 1999-2020 Silverado 1500 1995-2019 Tahoe 2007-2013 Avalanche 2002-2006 Avalanche 1500 2000-2014 Suburban 1500 2003-2014 Express 1500 2007-2020 Sierra 1500 2000-2019 Yukon (All Models) 2003-2014 Savana 1500 This is a compatible replacement part manufactured by AA Ignition. This wheel spacer kit is NOT a genuine OEM part. Vehicle makes and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this wheel spacer kit fits.