The product is a Raybestos 580719R R-Line Brake Rotor designed for the rear placement on a 2008-2009 Pontiac G8. It has a minimum thickness of 20mm and is a disc brake rotor made by Raybestos Brakes. The interchange part numbers include 14-55168, BR900512, and 580719, among others. It is manufactured in China and has a height of 2.8 inches and a length of 12.5 inches. This brake rotor is a quality replacement part known for its performance and durability in automotive braking systems. This item is a NEW open box. Please view all photos. Zoom in on photos for a close-up view. Thank you for your support! I work hard to provide the best customer service possible. If there are any issues with a purchase, PLEASE CONTACT ME directly through messaging. I will always do my absolute best to resolve any issue and be honest and fair in any situation. IF YOU BUY MULTIPLE ITEMS FROM ME - PLEASE utilize the cart feature pay for everything at one time! This saves you time helps me save on fees and keep my pricing low! FAST SHIPPING!!! THANK YOU SO MUCH FOR CHECKING OUT MY STORE, PLEASE COME BACK!?