4pc 1" (25mm) Wheel Adapters Spacers 4x130 to 4x100 (CHANGES BOLT PATTERN) with 12x1.5 studs nuts for 1968-1979 VW Beetle Bug & 1970-1976 Porsche 914 Volkswagen [CHANGES BOLT PATTERN] These Adapter Spacers will only work for you if your vehicle is 4x130 bolt pattern AND your wheels are 4x100 bolt pattern. See description for other important information. [APPLICATIONS] 1970-1976 Porsche 914. 1968-1979 Volkswagen Beetle. [SPECIFICATIONS] Pack of 4. 1.0" (25mm) Thickness | 78mm Hub Bore | 12x1.5 Threaded Studs/Nuts [BOLT PATTERN INFORMATION] 4x130 Vehicle Bolt Pattern | 4x100 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.