This product is a set of two high-grade T6 aluminum wheel spacers with class 10.9 carbon steel wheel studs. The spacers are hub-centric with a wheel-centric lip and have a thickness of 20mm. They have a black anodized finish and are designed to fit vehicles with a 5x115 bolt pattern, including the Dodge Challenger, Charger, and Magnum, as well as the Chrysler 300 and 300C. They are a performance part and can be directly bolted on, although modifying OE studs may be required.