After I put it to the test on my automotive, I was pleasantly surprised at how well the ACDelco Semi Metallic brake sensor performed.It definitely improved my vehicles braking POWER and gave me added confidence while driving. The installation was quick and easy allowing me to get back on the road in no time. The only downside is that the price is slightly higher than other options on the market. Overall, a great investment for those looking for high performance in their brake system..