1.5" UberTechnic 5x5 to 5x4.75 Wheel Adapters (CHANGES BOLT PATTERN) with 1/2" Studs - for GMC Jimmy Safari Savana Chevy Tahoe Astro Ford Thunderbird (5x127 to 5x120.65 Spacers) [CHANGES BOLT PATTERN] These Adapter Spacers will only work for you if your vehicle is 5x5" (5x127) bolt pattern AND your wheels are 5x4.75" (5x120.65) bolt pattern. See description for other important information. [APPLICATIONS] Buick, Chevrolet, Chevy, Chrysler, Ford, GMC, Lincoln, & Mercury vehicles with 5x5" (5x127) Bolt Pattern and 1/2"x20 Threaded Studs [SPECIFICATIONS] Pack of 2. 1.5" (38mm) Thickness | 78.3mm Hub Bore | 1/2"x20 Threaded Studs/Nuts [BOLT PATTERN INFORMATION] 5x5" (5x127) Vehicle Bolt Pattern | 5x4.75" (5x120.65) Wheel Bolt Pattern [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.