RockTrix for Precision European - (4) 1.5" 6x5.5 (6x139.7) Wheel Spacers 14x1.5 studs for Cadillac Escalade Chevy Avalanche Silverado 1500 Tahoe GMC C2500 Yukon Sierra Trucks [APPLICATIONS] Can fit on certain Cadillac, Chevrolet, & GMC vehicles with 6x139.7 or 6x5.5 Bolt Pattern. See Description to see exact Year/Makes/Models. Do this prior to placing your order to prevent fitment problems. [IMPORTANT FITMENT INFORMATION] 1) Measure wheel gap for clearance. You will need at least 1.5" (38mm) of fender clearance to prevent the wheel/tire from hitting the fenderliner. 2) Measure your vehicle's wheel studs. It must be less than 1.5" (38mm). 3) Check the thread size of your vehicle's wheel studs. It must be 14x1.5. [SPECIFICATIONS] Set of 4. 1.5" (38mm) Thickness | 6x139.7 or 6x5.5 Bolt Pattern | 108mm Hub Bore | 14x1.5 Threaded Studs/Nuts [MANUFACTURING] CNC Machined to exact specifications from Aerospace Billet Aluminum. Undergoes anodizing process to prevent corrision. Includes pre-installed heat treated 10.9 grade studs. [PRODUCT BENEFITS] Gives your vehicle 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.