Amazing quality for so much money, high quality. I use this type of bulbs in a lot of places in my car so a pack of 10 bulbs should give me a long life. As with any lightbulb, remember to avoid getting grease and oil on the lightbulb part, so I would suggest wearing gloves to install them to maximize their lifespan. I have a 2010 Camaro and use this style for the interior and license plate lights.