With the same performance as our Platinum Series bulbs, the Ultra-Gold bulbs add a unique twist. They feature a 24-Karat Gold Base and contacts for optimal power consumption and performance. They look great in your headlight casings too!They feature the same high-end output of our Platinum Series Bulbs and install in about 10 minutes.Only PlasmaGlow bulbs are backed by a No-Questions-Asked 10-Year Replacement Warranty. If your bulbs ever burn out, become dim, or stop working for any reason, you are covered by this industry-leading warranty. PlasmaGlow bulbs are also D.O.T. Compliant.2 Bulbs included per pack. Available in 4 part numbers.