Hey guys I just wanted to let you all know that if you are looking for the best Xenon Halogen bulbs for your Cobalt you have to buy these bulbs from Redline MotorSports . The brand is from Sunshine Racing sports called HALO Xenon Plasma Blue they draw normal current but produce 170w. I promise you guys that these are the Sh** They are bright and white..they are way better than PIAA, SILVERSTAR ULTRA, due to the output of 170w. I have used these in my car for the couple of years. What is the catch? They last about 6-8 months (that is in my car) I am still searching for a H1 bulbs in the same set up. The H1 bulbs that I found for my projectors never produce this much light so I put my stock lights back in since I found these bulbs. The price is great!! Buy them and if you dont like them...I'll buy them from you. Note: make sure that they say they produce 170 w or 100/80w min. I purchased some bulbs before, same brand same style but they were only 55/65w and 8500K they were super blue but weak weak light out put because of the 55/65w. That is what I have in now until these bulbs come. I like the blue light but I cant see when other cars are coming at me and a car behind me drowns out the light also. So BUY THE 170w bulbs and you will dominate the road nest to the HID lights. TRUST ME!!!