These 1.5 Inch Titan Wheel Accessories 5x4.5 to 5x5.5 wheel adapters are designed to allow you to fit wheels with a 5x5.5 bolt pattern on a vehicle with a 5x4.5 bolt pattern. They are machined from T6 6061 billet aluminum, making them both lightweight and durable. These adapters are easy to install and come with all necessary hardware. They are perfect for anyone looking to change the look of their vehicle or for those who want to use different wheels with a different bolt pattern.