4pc 1" Thick 5x110 to 5x100 Wheel Adapters (CHANGES BOLT PATTERN) with 12x1.5 Studs for Chevy Cobalt SS HHR Malibu Pontiac G6 Solstice Saturn Ion Red Line Sky 25mm Spacers [CHANGES BOLT PATTERN] These Adapter Spacers will only work for you if your vehicle is 5x110 bolt pattern AND your wheels are 5x100 bolt pattern. See description for other important information. [APPLICATIONS] Chevy Cobalt SS, HHR, Malibu. Pontiac G6 & Solstice. Saturn Ion, L100, L200, L300, Sky. [SPECIFICATIONS] Pack of 4. 1.0" (25mm) Thickness | 65.1mm Hub Bore | 12x1.5 Threaded Studs/Nuts [BOLT PATTERN INFORMATION] 5x110 Vehicle Bolt Pattern | 5x100 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.