I typed this, & posted it. My internet locked up though. It may show again, or it may not!
893ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen. That's as far as I could get on Sylvania's site. I ran them for about 2-4 years. They are much brighter than plain halogens! I then stepped up to a 4300 HID conversion kit for my HL's. I just bought the 4300 HID bulbs for my fogs, though. They are now much brighter than they ever were!