I was excited to try out the Topline Products T6 Grade Hub Centric Billet Spacers on my vehicle to see if it would give it the performance boost it needed. The 6X120 bolt pattern and 10mm thickness were a perfect fit for my car, and the 66.9mm center bore ensured a snug and secure fit. After using them for a while, I have mixed feelings about the spacers. On one hand, I did notice an improvement in my car's handling and stability, especially when taking turns. On the other hand, I experienced some vibration at high speeds that was not present before installing the spacers. Overall, I think the Topline Products T6 Grade Hub Centric Billet Spacers are a decent option for those looking to enhance their vehicle's performance, but be aware that they may come with some drawbacks.