The hub rings are precision machined.and ensure a snug fit every time, offer a tighter fit. Made of Quality materials, which is heat resistant, light with no burden to your car and sturdy. Eliminate vibrations caused by wheels not centering correctly onto your vehicle's hub. Heat resistant so it will not melt in even the most extreme driving conditions. If you have any questions, please feel free to contact us, we will help you at any time and contact you within 24 hours. This device is installed between the vehicle's hub and the wheel. The hubring fills in the gap between the vehicle hub and the centerbore of the wheel. Ensures a precise fit between your wheel and the hub. Heat Resistant so it will not Melt in Even the most Extreme Driving Conditions. If you have any questions, please feel free to contact us, we will help you at any time and contact you within 24 hours.