4pc 1.25" Thick Wheel Adapters - 5x4.5 or 5x4.75 Vehicle TO 5x4.53 Wheel | 5x114.3 or 5x120.65 Vehicle TO 5x115 Wheel - Spacers with 12x1.5 Studs [CHANGES BOLT PATTERN] These Adapter Spacers will only work for you if your vehicle is 5x114.3 (5x4.5) & 5x120.7 (5x4.75) bolt pattern AND your wheels are 5x115 or 5x4.53 bolt pattern. See description for other important information. [APPLICATIONS] Buick, Cadillac, Chevy, Chevrolet, GMC, & Pontiac vehicles with 5x114.3 (5x4.5) & 5x120.7 (5x4.75) Bolt Pattern and 12x1.5 Threaded Studs [SPECIFICATIONS] Pack of 4. 1.25" (32mm) Thickness | 74.1mm Hub Bore | 12x1.5 Threaded Studs/Nuts [BOLT PATTERN INFORMATION] 5x114.3 (5x4.5) & 5x120.7 (5x4.75) Vehicle Bolt Pattern | 5x115 or 5x4.53 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.