Features & Details Enhanced Driving Safety: These wheel spacers increase the axle track by 2 inches, widening the wheel track to lower the vehicle's center of gravity. This effectively solves severe body sway during high-speed cornering, significantly improving the vehicle's grip, stability, and handling. Product Specifications: Our wheel adapters includes 4 wheel spacers, each with a thickness of 2 inches (50.8mm), a bolt pattern of 6x5.5 inches, a hub bore of 4.25'' (108mm), and a thread pitch of M14x1.5. Please carefully check your vehicle's manual specifications before purchasing to ensure compatibility. Wide Compatibility: These wheel spacers are compatible with many Chevrolet, GMC, and Cadillac vehicles from 1988 to 2023, including Chevrolet (1999-2023 Silverado 1500, 2003-2014 Express 1500, 2007-2013 Avalanche, 2002-2006 Avalanche 1500, GMC (2000-2022 Yukon, 2007-2023 Sierra 1500, 2003-2014 Savana 1500, 2015-2022 Yukon XL, 2003-2005 Safari, 1991-1999 Yukon 4WD, 1988-1999 K1500). Cadillac (1999-2023 Escalade). Forged Aluminum Alloy: The spacers are forged from 6061-T6 aluminum alloy, providing exceptional strength and wear resistance, making them more robust and durable. The surface has a Dacromet coating for oxidation resistance and heat treatment, ensuring high precision and stability while enhancing hardness and corrosion resistance. All spacers come with grade 10.9 bolts. Easy Installation: The precisely machined wheel spacers feature an intuitive design and clear instructions for simple and quick installation. Each pair of wheel spacers comes with a user manual, detailing the specific installation steps. Note: Do not use an impact wrench; it is recommended to use a manual wrench.