RockTrix for Precision European - 4pc 1.25" Wheel Adapters 5x5 to 5x5.5 (CHANGES BOLT PATTERN) with 1/2" Studs & Nuts for many GMC Buick Chevy Ford Lincoln (5x127 to 5x139.7) 32mm Spacers [CHANGES BOLT PATTERN] These Adapter Spacers will only work for you if your vehicle is 5x5" (5x127) bolt pattern AND your wheels are 5x5.5" (5x139.7) 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 4. 1.25" (32mm) Thickness | 78.3mm Hub Bore | 1/2"x20 Threaded Studs/Nuts [BOLT PATTERN INFORMATION] 5x5" (5x127) Vehicle Bolt Pattern | 5x5.5" (5x139.7) 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.