20mm wheel spacers for GM. These spacers are bolt pattern 4x100 with a 56.1 center bore. These spacers are hub-centric and wheel-centric, to create a perfect tight snug fit, ensuring a beautiful, perfect ride. Price is for two (2) spacers. Price includes 10 extended length lug bolts. Please enter the part number of the desired lug bolts in the message box during the checkout process. If you have any questions regarding the lug bolts please call or email.Due to liability issues, Otis Inc LA wheel spacers and lug bolts ARE NOT returnable. If you have ANY questions please call or email us and we will help you to make sure you receive the correct parts for your application.