These Titan Wheel Accessories 1 Inch wheel spacers are designed with a 5x100 bolt pattern, 57.1mm hub bore and 12x1.5 thread pitch for Buick Skylark, Chevrolet Beretta, Chevy Cavlier, Corsica, Chrysler Cirrus, Laser and Lebaron. They are machined from T6 6061 billet aluminum, making them both lightweight and durable. These spacers will improve the stance of your vehicle, providing a more aggressive look while also adding additional clearance for aftermarket brake and suspension parts. They also allow for larger wheel and tire combinations to be installed, giving you more options for customization. These spacers are easy to install and come with all necessary hardware.